16(x-2y)²-25(x+2y)² 因式分解
问题描述:
16(x-2y)²-25(x+2y)² 因式分解
答
原式=(4x-8y+5x+10y)(4x-8y-5x-10y)
=(9x+2y)(-x-18y)
答
16(x-2y)²-25(x+2y)²
=(4x-8y+5x+10y)(4x-8y-5x-10y)
=(9x+2y)(-x-18y)