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
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