СРОЧНО!!!!!!! (x-2)(7+x)=0

Question

СРОЧНО!!!!!!! (x-2)(7+x)=0

Answer 1

(2-2)(7+2)=0
х=2
(2-2)=0
(7+2)=9
0×9=0

Answer 2

(x-2)(7+x)=0
7x+x²-14-2x=0
x²+5x-14=0
D=b²-4ac=25+56=81
x¹=( -b±√D)//2a=( -5+9)//2=4/2=2
x²=(-5-9)//2=-14/2=-7

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