いろいろな因数分解

因数分解せよ。


(x+1)2-81 (x+3)2-(x-5)2 (x-1)2+6(x-1)+8 (x+5)2-3(x+5)-40 (x+y)2-5(x+y)+6 (x-y)2+2(x-y)-63 x(a+b)-y(a+b) x(a-5)+3(a-5)

因数分解せよ。


ax2+2ax+a 3x2-3x-60 x3+2x2-15x (a+1)x2+7(a+1)x+12(a+1)


(x+10)(x-8) 16(x-1) (x+1)(x+3) (x-3)(x+10) (x+y-2)(x+y-3) (x-y-7)(x-y+9) (a+b)(x-y) (a-5)(x+3)


a(x+1)2 3(x-5)(x+4) x(x+5)(x-3) (a+1)(x+3)(x+4)