Question

Ajutatima la evaluare varog.
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Answer 1

Explicație pas cu pas:

1.(8x-3)^2=64x^2-48x+9.

2.3x+5y-7,5x-8,12y=-4,5x-3,12y.

3.a)-2x(3xy-5y)=-6x^2y+10xy.

b)(5x+3)^2=25x^2+30x+9.

c)(4a-7)(4a+7)=16a^2-49.

d)(2x^2)^3×14x^2=8x^6×14x^2=112x^8.