整式乘法练习题填空题1.(x+4)(-x+4)=____.2.(x+3y)(___)=9y²-x²3.(-m-n)(___)=m²-n²4.-(2x²+3y)(3y-2x²)=____.5.(a-b)(a+b)(a²+b²)=____6.(___-2x)(___-2x)=4x²-25y²7.(xy-z)(z+xy)=____.8.(¼x+y
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![整式乘法练习题填空题1.(x+4)(-x+4)=____.2.(x+3y)(___)=9y²-x²3.(-m-n)(___)=m²-n²4.-(2x²+3y)(3y-2x²)=____.5.(a-b)(a+b)(a²+b²)=____6.(___-2x)(___-2x)=4x²-25y²7.(xy-z)(z+xy)=____.8.(¼x+y](/uploads/image/z/12488373-45-3.jpg?t=%E6%95%B4%E5%BC%8F%E4%B9%98%E6%B3%95%E7%BB%83%E4%B9%A0%E9%A2%98%E5%A1%AB%E7%A9%BA%E9%A2%981.%28x%2B4%29%28-x%2B4%29%3D____.2.%28x%2B3y%29%28___%29%3D9y%26%23178%3B-x%26%23178%3B3.%28-m-n%29%28___%29%3Dm%26%23178%3B-n%26%23178%3B4.-%282x%26%23178%3B%2B3y%29%283y-2x%26%23178%3B%29%3D____.5.%28a-b%29%28a%2Bb%29%28a%26%23178%3B%2Bb%26%23178%3B%29%3D____6.%28___-2x%29%28___-2x%29%3D4x%26%23178%3B-25y%26%23178%3B7.%28xy-z%29%28z%2Bxy%29%3D____.8.%28%26%23188%3Bx%2By%26%2317)
整式乘法练习题填空题1.(x+4)(-x+4)=____.2.(x+3y)(___)=9y²-x²3.(-m-n)(___)=m²-n²4.-(2x²+3y)(3y-2x²)=____.5.(a-b)(a+b)(a²+b²)=____6.(___-2x)(___-2x)=4x²-25y²7.(xy-z)(z+xy)=____.8.(¼x+y
整式乘法练习题
填空题
1.(x+4)(-x+4)=____.
2.(x+3y)(___)=9y²-x²
3.(-m-n)(___)=m²-n²
4.-(2x²+3y)(3y-2x²)=____.
5.(a-b)(a+b)(a²+b²)=____
6.(___-2x)(___-2x)=4x²-25y²
7.(xy-z)(z+xy)=____.
8.(¼x+y²)(___)=y^4-1/16x²
9.下列多项式乘法,不能用平方差公式计算的是()
A.(-a-b)(-b+a)
B.(xy+z)(xy-z)
C.(-2a-b)(2a+b)
D.(0.5x-y)(-y-0.5x)
10.(4x²-5y)需乘以下列哪个式子,才能使用平方差公式进行计算()
A.-4x²-5y
B.-4x²+5y
C.(4x²-5y)²
D.(4x+5y)²
11.a^4+(1-a)(1+a)(1+a^2)的计算结果是()
A.-1 B.1 C.2a^4-1 D.1-2a^4
整式乘法练习题填空题1.(x+4)(-x+4)=____.2.(x+3y)(___)=9y²-x²3.(-m-n)(___)=m²-n²4.-(2x²+3y)(3y-2x²)=____.5.(a-b)(a+b)(a²+b²)=____6.(___-2x)(___-2x)=4x²-25y²7.(xy-z)(z+xy)=____.8.(¼x+y
a+b=7,ab=6,a^2+b^2-ab=(a+b)^2-2ab-ab=(a+b)^2-3ab=49-18=31 X+1/x=3,x^2+1/x^2=(x+1/x)^2-2=9-2=7 2、=(a