Question

1) Rút gọn:

\(A=9x^2+12x\)

\(B=x^6+4x^3\)

\(C=x^2+10x-10\)

Answer 1

\(A=9x^2+12x\)

\(A=9x^2+12x+4-4\)

\(A=\left(3x+2\right)^2-4\)

\(B=x^6+4x^3\)

\(B=x^6+4x^3+4-4\)

\(B=\left(x^3+2\right)^2-4\)

\(C=x^2+10x-10\)

\(C=x^2+10x+25-35\)

\(C=\left(x+5\right)^2-35\)

Answer 2

A = 9x² + 12x

A = 3x ( 3x + 4 )

B = x⁶ + 4x³

B = x³ ( x³ + 4 )

C = x² + 10x - 10

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