2 answers:
Answer:
1) x=-0.5 and x=-3.41
2) 12x^2
Step-by-step explanation:
a) 7-x^2=4x-5
7-x^2-4x+5=0
-x^2-4x-2=0
Multiply by -1
x^2+4x+2=0
Solve using quadratic formula 
we have a=1, b=4, c=2
Putting values to find x

So, x=-0.5 and x=-3.41
b) Simplify


Answer:
x=5/4 + 5b/4
b= -1+ 4x/5
The other one is 12x^2
Step-by-step explanation:
i asked my online computer tutoring app thingy
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