(2х-1)^2=4 (3х+6)^1=100 (3-2х)^2=25

Question

(2х-1)^2=4 (3х+6)^1=100 (3-2х)^2=25

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Answer 1

1) 4x²-4x+1-4=0
4x²-4x-3=0
D=16+48=64
x1= (4-8)/8= -1/2
x2= (4+8)/8=3/2

2) 9x²+36x+36-100=0
9x²+36x-64=0
D=1296+2304=3600
x1= (-36+60)/18=4/3
x2= (-36-60)/18=16/3

3) 9-12x+4x²-25=0
4x²-12x-16=0
x²-3x-4=0
D=9+16=25
x1=(3+5)/2=4
x2=(3-5)/2=-1