式の展開(いろいろな計算1)

次の式を展開しなさい

2x(x-4)-(5-8x) x(x-6)+3(2x+8) 2x(9x-5)+3x(4-6x) 3a(2a-4b)-2b(b-6a) x(4x+3)-(4x²+2x-3) 3(2a²+3ab-4)-2a(5a-b-1)

次の式を展開しなさい

(4x²-8xy)÷4x+3x+y 5a+b+(8a²-4ab)÷4a (8x²y+4xy²)÷2xy-(5y-2x) x²+4x-(6x²y+12xy-9y)÷3y

次の式を展開しなさい

x(2x-3)+(x+1)(x+3) a(2a-3b)-(a+5b)(a-1) (x+1)(y-1)-x(y-2) (3a+4)(2-b)-b(a-b-4) (2x+3y)(x-3y)-(2x+y)(x-9y) (a-b)(3a-4b)-(5a+2b)(a+2b) (3x+1)(y-2)+(x-2y)(x-y) (2a+b)(a-1)-(a-2b)(b+3)

2x²-5 x²+24 2x 6a²-2b² x+3 -4a²+11ab+2a-12

4x-y 7a 6x-3y -x²+3

3x²+x+3 a²-8ab+a+5b x+y-1 -4ab+b²+6a+8 14xy -2a²-19ab x²+2y²-6x+y-2 2a²+2b²-5a+5b