Question

find the product of
$(a + b + c)and(a ^{2} + 2bc + c ^{2} )and \: verify \: the \: result \: by \: taking \: a = - 2 \: b = 1 \: and \: c = 3$
​

Answer 1

$step \: by \: step \: explanation$

》》(a+b+c) *$a^2+2bc+c^2$

》》(-2+1+3)*$(-2^2)+2*1*3+3^2$

》》+2*(4+6+9)

》》+2*19

》》+18

[tex] hope\: it \:helps\: u