(3+9)²
algebraic expressions formula please
Answers
Answered by
1
Answer:
formula :
(a + b)2 = a2 + 2ab + b2
Answered by
57
Answer:
( a + b)²= a²+2ab+ b²
= (3+9)²
= 3²+2*3*9+ 9²
= 9+ 54+81
= 144 ✓
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