Question

Разложите на множители:64x^2-48x-25y^2-30y
18a^2+24a+8-200b^2
x^4+8x^2+15
a^2+4ab+3b^2
126x^3+3x^2+3x+1

Answer 1

64x^2-25y^2 -48x-30y = (8x)^2 -(5y)^2-48x-30y = (8x-5y)(8x+5y) -6(8x+5y) = (8x+5y)(8x-5y-6)