因式分解(2x-3y)(x+y)+(3x-2y)(x+y)❶(a-b)(a²-ab-b²)-ab(a-b)❷y⁴-8y²+16❸(x²+y²)²-(2xy)²❹(a+b)²-4(a+b)❻2016*2010-2013²

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因式分解(2x-3y)(x+y)+(3x-2y)(x+y)❶(a-b)(a²-ab-b²)-ab(a-b)❷y⁴-8y²+16&#

因式分解(2x-3y)(x+y)+(3x-2y)(x+y)❶(a-b)(a²-ab-b²)-ab(a-b)❷y⁴-8y²+16❸(x²+y²)²-(2xy)²❹(a+b)²-4(a+b)❻2016*2010-2013²
因式分解(2x-3y)(x+y)+(3x-2y)(x+y)
❶(a-b)(a²-ab-b²)-ab(a-b)
❷y⁴-8y²+16
❸(x²+y²)²-(2xy)²
❹(a+b)²-4(a+b)
❻2016*2010-2013²

因式分解(2x-3y)(x+y)+(3x-2y)(x+y)❶(a-b)(a²-ab-b²)-ab(a-b)❷y⁴-8y²+16❸(x²+y²)²-(2xy)²❹(a+b)²-4(a+b)❻2016*2010-2013²
(X+Y)^2-(2X-3Y)^2
=(x+y+2x-3y)(x+y-2x+3y)
=(3x-2y)(-x+4y)
=40×[-﹙-50﹚]
=2000
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