A - a removes both a’s from equation, then you’re left with b + bsquared, since they are unknown values you cannot combine them, even if it is the same letter, you can only add and subtract unknown values with their same letters together.
2x^4
13b-10
5y+10
5a^3
2b^2+8a
Answer:
i think its c (Im not 100% sure
Step-by-step explanation:
Mistake in Line 2 : Was in the determining the values for a ,b,c
Mistake in Line 4 : Not taking the square roots of both sides.
Step-by-step explanation:

First Mistake : Line 2

Second Mistake : Line 4

Correct Solution :


Answer:
42 sq. Units
Step-by-step explanation:
I took the test