①-a四次方+16
=(4-a^2)(4+a^2)
=(2-a)(2+a)(4+a^2)
②1-36b平方
=(1-9b)(1+9b)
③12x平方-3y平方
=3(4x^2-y^2)
=3(2x-y)(x+y)
④0.49p平方-144
=(0.7p-12)(0.7p+12)
⑤(2x+y)平方-(x+2y)平方
=(2x+y-x-2y)(2x+y+x+2y)
=(x-y)(3x+3y)
=3(x-y)(x+y)
①-a四次方+16
=(4-a^2)(4+a^2)
=(2-a)(2+a)(4+a^2)
②1-36b平方
=(1-9b)(1+9b)
③12x平方-3y平方
=3(4x^2-y^2)
=3(2x-y)(x+y)
④0.49p平方-144
=(0.7p-12)(0.7p+12)
⑤(2x+y)平方-(x+2y)平方
=(2x+y-x-2y)(2x+y+x+2y)
=(x-y)(3x+3y)
=3(x-y)(x+y)