find the value of x when (7x-20),(3x+20)
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Is it multiplication? If yes, the below is the answer:
(7x-20)(3x+20)
= 7x(3x+20)-20(3x+20)
= 21x^2 + 140x - 60x - 400
= 21x^2 +80x - 400
(Twenty one x squared plus eighty x minus four hundred)
Hope it helps!
(7x-20)(3x+20)
= 7x(3x+20)-20(3x+20)
= 21x^2 + 140x - 60x - 400
= 21x^2 +80x - 400
(Twenty one x squared plus eighty x minus four hundred)
Hope it helps!
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