(x + 5) (x - 7) + (x + 5) (x - 5) + 4x = 0 и (4x + 3)^2 - 3(3 - 8x) = 0 пожалуйста ). Created by sashapopoff2001. matematika-ru

(x + 5) (x - 7) + (x + 5) (x - 5) + 4x = 0 и (4x + 3)^2 - 3(3

sashapopoff2001 @sashapopoff2001

July 2022 1 5 Report

(x + 5) (x - 7) + (x + 5) (x - 5) + 4x = 0

и

(4x + 3)^2 - 3(3 - 8x) = 0

пожалуйста )

Answers & Comments

kraska69 Х²+5х-7х-35+х²+5х-5х-25+4х=0
2х²+2х-60=0/:2
х²+х-30=0
D=1+120=121
x1=-1+11/2=5
x2=-1-11/2=-6

16x²+24x+9-9+24x=0
16x2+48=0
16x(x+3)=0
16x=0
x=0
x+3=0
x=-3

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sashapopoff2001 July 2022 | 0 Ответы

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