Question

Solve for a.
5a + 2 - 7-8 = 0
What is the root? If there is no root, choose none.

Answer 1

`√(5a+2)-√(7a-8)=0`

Isolate a square root on the left-hand side

`√(5a+2) =√(7a-)8+0`

Eliminate the radical :-

`5a+2 = 7a-8`

Solve:-

`2a -10 = 0`

Add 10 to both sides, then Divide both sides by 2:-

`a = 5`

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Answer 2

Answer:5

Step-by-step explanation: root5a+2 +7a-8 = 0

squaring both side

5a+2=7a-8

8+2=7a-5a

10=2a

a=5