I am assuming you wrote the problem wrong. Is it a^2?
A^2 -4A-21=0
(A-7)(A+3)=0
A=7 A=-3, ignore the negative number because it doesn't make sense if you plug in for a.
length=a+3=7+3=10
Width=7=a
X^2+8x+x+8 simplifies to x^2+9x+8
Answer:
A. divide only on the right side of the equation by 2.
Step-by-step explanation:
I took the test yesterday and I got it hope this helps.
2x - 4 = 60
2x = 64
x = 32
hope it helps
Answer:
less than.
Step-by-step explanation:
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