Use suitable identities to find the products : $(3-2 x)(3+2 x)$
Use suitable identities to find the products : $(3-2 x)(3+2 x)$
$(3-2 x)(3+2 x)$
Using the identity $(a+b)(a-b)=a^{2}-b^{2},$ we have :
$(3-2 x)(3+2 x)=(3)^{2}-(2 x)^{2}=9-4 x^{2}$
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