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Virty [35]
3 years ago
13

PLEASE HELP Expand (r + 3)^2

Mathematics
1 answer:
vivado [14]3 years ago
4 0

Answer:

r²+6r+9

Step-by-step explanation:

for the expansion of (r+3)², we use the formula as,

(a+b)²=a²+2ab+b²

here, we have

a=r

b=3

plug in all the values

(r+3)²=r²+2(r)(3)+3²

solving the equation

(r+3)²=r²+6r+9

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