1) x x^2+y^2 x ____ +_______ - ____

July 2022 1 12 Report

1) x x^2+y^2 x
____ +_______ - _____
x-y y^2-x^2 x-y

2) 2x-3+2(x-1)=4(x-1)-7

3)2x+3-6(x-1)=4(1-x)+5

4) найдите значение выражения (2a^-3 b^-5 ) ^-2 если а=2;b= 1
___
2

5)найдите значение а если известно что прямая ax+2y=6 проходит через точку A(4;1)

Answers & Comments

Artem112

Verified answer

$\frac{x}{x-y} + \frac{x^2+y^2}{y^2-x^2} - \frac{x}{x-y} =\frac{x^2+y^2}{y^2-x^2}$
$2x-3+2(x-1)=4(x-1)-7
\\
2x-3+2x-2=4x-4-7
\\
4x-5 \neq 4x-11$
$2x+3-6(x-1)=4(1-x)+5
\\\
2x+3-6x+6=4-4x+5
\\\
9-4x=9-4x
\\\
x\in R$
$(2a^{-3 } b^{-5} ) ^{-2}= \frac{a^6b^{10}}{4} = \frac{2^6\cdot0.5^{10}}{4} = \frac{0.5^4}{4} = \frac{1}{2^6} =0.015625$
$4a+2\cdot1=6
\\\
4a+2=6
\\\
4a=4
\\\
a=1$

0 votes Thanks 1

Answers & Comments

Verified answer

reshite uravneniya1 x2 5 x52x 12 2x33x111x3032x x123x2 64

1abcd trapeciya najdite ugol cdm esli ugol a 60 gradusov2abcd trapeciya najdite

1abcd trapeciya najdite ad esli bc raven 8 sm a mn 10 najditeadsdelat risuno

planishim v kazahstane 1geografiseskoe polozhenie 2istok rekirelefvysota 3

1 vcehovojelektroprovodkevklyuchenoparallelnopyatlamp kazhdaya

1)(x+3)^2-1;2)49x^2-(y+8x)^2;3)9-(7+3a)^2;4)(a+b)^2-(b-c)^2;5)(4a-3)^2-16;6)(2b-...

6=0 2)25x^2-16=0 3)x^2-36=0 4)y^2-49=0 5)y^2-0.25=0 6)64-9x^2=0 7)9x^2-4=0 8)z^2...

1tri provodnika soprotivleniem 12 om 12 om i 6 om soedineny parallelno oprede

danor130omr230omr330omr430omr530omr630omr730omuobsh15vnajtiy1sila toka

12x2bx 100 esli on imeet koren 5najti b i reshit uravnenie23x2bx240 e

рекомендуемые вопросы

Helpful Links

Helpful Social