please help me to solve this question (2x+4)(2x-5)
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Step-by-step explanation:
(2x+4)(2x-5)
Here,
(x+a)(x+b) formula will be used.
This is, x²+(a+b)x+ab
here, x = 2x
a = 4
b = (-5)
So, (2x+4)(2x-5) = (2x) ² + [4+(-5)]x + 4*(-5)
= 4x² - x - 20.
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