Step-by-step explanation:
(7+2x)(5+2x) - 35 = 35
35+14x+10x+4x^2 = 35 + 35
4x^2 + 24x + 35 - 70 = 0
4x^2 + 24x - 35 = 0
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Step-by-step explanation:
(7+2x)(5+2x) - 35 = 35
35+14x+10x+4x^2 = 35 + 35
4x^2 + 24x + 35 - 70 = 0
4x^2 + 24x - 35 = 0