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please solve!!6^

0 votes
solve linear quadratic :  y=3+2x-x²  ,  y=2x²+5x-3
asked Jan 19, 2015 in PRECALCULUS by anonymous

1 Answer

0 votes

Step 1:

The quadrartic equations are  and .

Equate the forms.

image

Divide each side by negative image.

image

Step 2:

Solve the above equation by using factorization.

Apply zero product property.

image and image.

and .

Step 3:

Substitute the image values in either of two eqations.

Substitute in equation .

Substitute in equation .

Solution:

and .

and .

answered Jan 19, 2015 by Sammi Mentor
edited Jan 19, 2015 by Sammi

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