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24 Cards in this Set
- Front
- Back
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Formula for sum of 2 squares |
This doesn't exist, only DIFFERENCE of 2 squares |
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Difference of 2 squares |
A²-b²=(a+b) (a-b) |
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When do you use AC method? |
When the coefficient of X is more than 1 |
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Perfect trinomial square?? |
Formula: (a²) +/- (2ab) + (b²)= (a +/- b)² Middle number= 2X the product of the sq.roots of a & b Eg: 25x²-60x+36= 5x*6=60x |
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Sum of 2 cubes |
a³+b³=(a+b) (a²-ab+b²) |
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Difference of 2 cubes |
a³-b³= (a-b) (a²+ab+b²) |
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List the cubes |
1, 8, 27, 64, 125 ----------------------- 1, 2, 3, 4, 5 |
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List your squares |
1, 4, 9, 16, 25, 36, 49, 64, 81, 100 1. 2. 3. 4. 5. 6. 7. 8. 9. 10 |
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What must every parenthesis be? |
PRIME!! |
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How do you solve a quadratic equation? |
Set it as equal to zero, find factors that add up to middle coefficient and group, then do an equation for each parenthesis. Don't forget to carry down the zero!! |
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Point slope form |
y²-y¹=m(x²-x¹) |
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Slope intercept form |
y=mx+b |
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To write a fraction %as fraction |
Multiply coefficient by denominator, add to numerator and multiply by 100 and reduce fraction |
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Area of a circle |
πr² |
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When in doubt... |
Can you do an equation? In factoring, is there a GCF? |
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(2a-3) (a+7)=0. What do you do?? |
EQUATIONS!!!! 2a-3=0 solve for a |
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M=what? |
y²-y¹ --------- x²-x¹. M=SLOPE |
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Markup problem formula |
S=C+rC sale price equals the cost plus the rate of the markup times the cost. |
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Discount problems |
S=R-rR sale price equals the retail price plus the rate of discount times the retail price |
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When solving word problems with two unknowns... |
Let X be the one mentioned second |
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Sum of the angles of a triangle |
180° |
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Complementary angles add up to what? |
90° |
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Supplementary angles add up to what? |
180° |
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Standard form for slope |
Ax+By=C plug-in 0 for x and solve, then do the same for y |
