Question

EXPAND THE POLONOMIAL

(5a+1/2b)^2 HELPPP ASAP

Answer 1

25
`a^(2)`+5ab+
`(b^(2) )/(4)`

Explanation:

`(5a+(1)/(2) b)^(2)`

1. First, write out the expression without the square

`(5a+(1)/(2) b)(5a+(1)/(2) b)`

2. Then use foil to multiply:

5a*5a+5a*
`(1)/(2)b`+
`(1)/(2)b`*5a+
`(1)/(2)b`*
`(1)/(2)b`

=25
`a^(2)`+5ab+
`(b^(2) )/(4)`

3. That is your answer.