( х+5)*(х+2)-3(4х-3)=(х-5)^2

Question

( х+5)*(х+2)-3(4х-3)=(х-5)^2

Answer 1

(х+5)*(х+2)-3(4х-3)=(х-5)^2
x^2 +5x +2x + 10 - 12x + 9 = x^2 -10x + 25
x^2 +5x - x^2 + 10x= 25 -19
 15x = 6
 x= 0,4

Answer 2

X^2+2x+5x+10-12x+9=x^2-10x+25
2x+5x-12x+10x=25-10
17x-12x=15
5x=15
x=15/5
x=3
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