4^(х+1) + 4^(х+2) = 40 Как преобразовать 40?. Created by Juliya11. algebra-ru

4^(х+1) + 4^(х+2) = 40 Как преобразовать 40?...

July 2022 1 9 Report

4^(х+1) + 4^(х+2) = 40
Как преобразовать 40?

Answers & Comments

uekmyfhfp 4^(х+1) + 4^(х+2) = 40;
4^x * 4^1 + 4^x* 4^2 = 40;
4*4^x + 16*4^x = 40;
4^x*(4+16) = 40;
20*4^x = 40; /:20;
4^x = 2;
2^(2x) = 2^1;
2x = 1;
x = 1/2.

3 votes Thanks 4

kirichekov опечатка в первой строке после =40. нет пробела или запятой

Juliya11 Спасибо

uekmyfhfp все есть

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