If (3x -4)(5x +7) = 15x^2 - Ax - 28, then A= _____
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Answer:
A=1
Step-by-step explanation:
(3x-4)(5x+7)=15x^2-Ax-28
15x^2-20x+21x-28= 15x^2-Ax-28
15x^2+1x-28=15x^2-Ax-28
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