Помогите! Разложите на множители а) 3х^2-30х+75 б)3а^2-3b^2-a+b. Created by hesoyam123. algebra-ru

Помогите! Разложите на множители а) 3х^2-30х+75 б)3а^2-3b^2-a+b...

October 2021 1 15 Report

Помогите!
Разложите на множители
а) 3х^2-30х+75
б)3а^2-3b^2-a+b

Answers & Comments

julyap $1)3 x^{2} -30x+75=3*( x^{2} -10x+25)=3(x-5) ^{2} \\ \\ 2)3a ^{2} -3b ^{2} -a+b=3(a ^{2} -b ^{2} )-a+b=3(a-b)(a+b)-1(a-b)= \\ =(a-b)(3*(a+b)-1)=(a-b)(3a+3b-1)$

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v odnom motke 98 m provolokia v drugom 120m takoj zhe provolokikakova stoimos

rebyatproshupomogite s istoriej srochno14 mozhete ne delat pozhalujsta

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