Помогите решить ?!!! (x+6)²=(x+9)² (x+9)²=(10-x)² -2x²+3x-4=-x²-x+(2-x)² (x+6)²+(x+3)²=2x. Created by Nadii. algebra-ru

Помогите решить ?!!! (x+6)²=(x+9)² (x+9)²=(10-x)² -2x²+3x-4=-x²-x+(2-x)² (x+6...

July 2022 1 1 Report

Помогите решить ?!!!
(x+6)²=(x+9)²
(x+9)²=(10-x)²
-2x²+3x-4=-x²-x+(2-x)²
(x+6)²+(x+3)²=2x

Answers & Comments

snow99 1) (х+6)2=(х+9)2х2+12х+36=х2+18х+81х2+12х+36-х2-18х-81=0-6х-45=0-6х=45х= - 7,52) (х+9)2=(10-х)2х2+18х+81=100-20х+х2х2+18х+81-100+20х-х2=038х-19=038х=19х= 0,53) -2х2+3х-4= -х2-х+(2-х)2-2х2+3х-4= -х2-х+4-4х+х2-2х2+3х-4+х2+х-4+4х-х2=0-2х2+8х-8=0х2-4х+4=0D=b2-4ac=16-4*4=0х= -b/2a= 4/2=24) (х+6)2+(х+3)2=2хх2+12х+36+х2+6х+9-2х=02х2+16х+45=0D=256-4*2*45=256-300<0Нет решений

1 votes Thanks 1

Nadii 38x=19 x=0.5 вроде 38/19=2

snow99 Ты 19 на 38 делишь, а не наоборот.

snow99 Или по-твоему 38*2=19? :)

Nadii ;) СПАСИБО !!!

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Answers & Comments

sasha i petya odnovremenno poplyli navstrechu drug drugu ot dvuh beregov pruda i ched944f49b78c44cbf16be4c0ceff1ea01 43580

neizvestnoe chislo razdelili na 15 i poluchili chislo ravnoe chastnomu chisel 120 i

najti ploshadi zakrashennyh figur na chertezhah kakuyu chast sostavlyaet ploshad treu

min nado reshit dvumya sposobami

puteshestvennikov zovut sasha andrej petya kolya i igor kolya na 4 goda mladshe a48621a525d58ccf4d770a5e4f8d63e03 91163

puteshestvennikov zovut sasha andrej petya kolya i igor kolya na 4 goda mladshe a63ff7c5ccde861ec25b21d8e08d3c026 30525

ch bolshe skorosti velosipedista i v 5 raz menshe skorosti avtomobilya chemu ravna621d597c0995f8d9eee7a24b0258ae20 30294

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