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a. (a)²+(b)²+(c)²=a²+b²+c²
b. 2(a)(b)=2ab
c. 2(a)(c)=2ac
d. 2(b)(c)=2bc
answer=a²+b²+c²+2ab+2ac+2bc(its arrange by exponents)
1.the sum of the first,second and last term.
2.twice the product if the first and second term.
3.twice the product of the first and last term.
4.twice the product of the second term and the last term.
5. combine answers from a through d
1 5 1
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