#10,11,12.

label Algebra
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schedule 1 Day
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Feb 3rd, 2015

10

3x^2+2=14

3X^2=12

X^2=4

SQUARE ROOT OF 4=2

X=2

11.

-X^2+4X-5=0

-X^2-X+5X-5=0

x(X-1)+5(X-1)=0

(X+5)(X-1)=0

X=-5 OR X=1


12.  2x-x^2=-15

x^2-2x-15=0

x^2-5x+3x-15=0

x(x-5)+3(x-5)=0

(x+3)(x-5)=0

x=-3 or x=5


Feb 3rd, 2015

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Feb 3rd, 2015
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