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(3y -5)(y+3) - (у – 5)(y+5) = 2(y+2)* +6.помогите пж!!
(3y -5)(y+3) - (у – 5)(y+5) = 2(y+2)* +6.помогите пж!!
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Объяснение:
3у² - 5у + 9у -15 - у² -5у +5у +25 = 2у +4 +6
2у² +2у =0
2у (у+1) = 0
у1 = 0
у2 = -1