因数分解3
1. 因数分解しなさい
①25x2-1 ②9x2-6x+1 ③x2+12x+27 ④ax+ay-x-y ⑤x2-x-90 ⑥x2-22x+121 ⑦x2+8x-20 ⑧2ax-2a+3x-3 ⑨49x2-36y2 ⑩x2+6xy+9y2 ⑪36x2-27x ⑫4x2+20ax+25a2
2. 因数分解しなさい
①4a2bc-12ab2c+8abc2 ②2x2-5x-3 ③49x2-16y2z2 ④6x2+7x-3 ⑤8x2y+10xy+3y ⑥x3-x ⑦x3-9x2+20x ⑧3ax2-18ax+27a ⑨(x+2)2-5(x+2) ⑩(x+3)2+(x+3)-12 ⑪(2a+b)2-(a-2b)2 ⑫x2+6xy+9y2-25 ⑬x2+10x+25-y2 ⑭x2-2xy+y2-9
1.
①(5x+1)(5x-1) ②(3x-1)2 ③(x+3)(x+9) ④(x+y)(a-1) ⑤(x-10)(x+9) ⑥(x-11)2 ⑦(x+10)(x-2) ⑧(2a+3)(x-1) ⑨(7x+6y)(7x-6y) ⑩(x+3y)2 ⑪9x(4x-3) ⑫(2x+5a)2
2.
①4abc(a-3b+2c) ②(2x+1)(x-3) ③(7x+4yz)(7x-4yz) ④(2x+3)(3x-1) ⑤y(4x+3)(2x+1) ⑥x(x+1)(x-1) ⑦x(x-4)(x-5) ⑧3a(x-3)2 ⑨(x+2)(x-3) ⑩x(x+7) ⑪(3a-b)(a+3b) ⑫(x+3y+5)(x+3y-5) ⑬(x+5+y)(x+5-y) ⑭(x-y+3)(x-y-3)
