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19 votes
19 votes
Consider the expression below

User Putvande
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1 Answer

22 votes
22 votes

Solution

For this case we have the following expression:

A.11x^2 +6x-6

B.7x^2 +16x+25

C. 11x^2 -5x+13

D. 7x^2 -3x+8

Then the correct solution :

x^2 +15x +65 +(2x-5)(3x+8)= x^2 +15x +65 +6x^2 +16x -15x -40= 7x^2 +16x +25 (B)

(4x+1)(3x-4) -(5x^2-10x-12)= 12x^2 -16x +3x -4 -5x^2 +10x +12 = 7x^2 -3x +8 (D)

8x^2 +19x+4 + (3x+2)(x-5)= 8x^2 +19x +4 +3x^2-15x +2x -10= 11x^2 +6x -6 (A)

(6x+1)(3x-7) -(7x^2-34x-20)= 18x^2-42x +3x -7 -7x^2 +34x +20= 11x^2 -5x +13 (C)

User Wray Zheng
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