упростите выражение: 5(3-5х)^2-5(3х-7)(3х+7). Created by maslinnikovaan2. algebra-ru

упростите выражение: 5(3-5х)^2-5(3х-7)(3х+7)...

July 2022 1 4 Report

упростите выражение:
5(3-5х)^2-5(3х-7)(3х+7)

Answers & Comments

kolobok1431 5(3-5х)² - 5(3х-7)*(3х+7) = 5 * (9 - 30х + 25х²) - 5 * (9х² - 49) =
= 45 - 150х + 125х² - 45х² + 245 = 80х² - 150х + 290 = 10 *(8х² - 15х + 29)

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