Question

七年级因式分解,要过程啊,急求①25x^2-10x+1②4a^4+12a平方b平方+9b^4③x^2-10x-24④a^

Answer 1

①25x^2-10x+1=（5x-1)^2

②4a^4+12a平方b平方+9b^4=(2a^2+3b^2)^2

③x^2-10x-24=(x-12)(x+2)

④a^2b^2-ab-20=(ab-5)(ab+4)

⑤x^2+25xy+150y^2=(x+15)(x+10)

⑥x^4-5x^2y^2-36y^4=(x^2-4y^2)(x^2+9y^2)