1) 64x^2 - 8 = 8(8x^2 - 1) = 8(2x + 1)(4x - 1)2) y^3 + 64 = (y + 4)(y^2 - 4y + 16)3) x^2 - 10x + 25 = (x - 5)^24) 9y^2 - 4 = 09y^2 = 4y^2 = 4/9y = ±2/35) упростите a(a+2b)+(b+a)a(a+2b) + (b+a) = a^2 + 2ab + b + a = a^2 + 2ab + a + b
1) 64x^2 - 8 = 8(8x^2 - 1) = 8(2x + 1)(4x - 1)
2) y^3 + 64 = (y + 4)(y^2 - 4y + 16)
3) x^2 - 10x + 25 = (x - 5)^2
4) 9y^2 - 4 = 0
9y^2 = 4
y^2 = 4/9
y = ±2/3
5) упростите a(a+2b)+(b+a)
a(a+2b) + (b+a) = a^2 + 2ab + b + a = a^2 + 2ab + a + b