Question

Phân tích

A= x² – 100y²

B= 64x³ + 1

C= x² – 16x + 64 – 9y²

Answer 1

A= x²-100y²

= x²-(10y)²

^{= (x-10y)(x+10y)}

Answer 2

B= 64x³+1

= (4x)³+1³

=(4x+1)(16x²-4x+1)

Answer 3

a, \(x^2-100y^2\)

= \(x^2-(10y)^2\)

= \(\left(x-10y\right)\left(x+10y\right)\)

b, \(64x^3+1\)

= \(\left(4x\right)^3+1^3\)

= \(\left(4x+1\right)\left(16x^2-4x+1\right)\)

c, \(x^2-16x+64-9y^2\)

= \(\left(x-8\right)^2-9y^2\)

= \(\left(x-8-9y\right)\left(x-8+9y\right)\)

Answer 4

C = x²-16x+64-9y²

= (x-8)² -(3y)²

= (x-8-3y)(x-8+3y