Решите уравнение x2 – 9x = 0.

Question

Решите уравнение x2 – 9x = 0.

Answer 1

X2-9x=0
x(x-9)=0
x1=0
x2=9

Comments

3x^2?

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щя

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3x^2=4-x
3x^2+x-4=0
3x^2+4x-3x-4=0
x(3x+4)-(3x+4)=0
(3x+4)(x-1)=0
x(1)=-4/3
x(2)=1