If you would like to write a * b + c in simplest form, you can do this using the following steps:
a = x + 1
b = x^2 + 2x - 1
c = 2x
a * b + c = (x + 1) * (x^2 + 2x - 1) + 2x = x^3 + 2x^2 - x + x^2 + 2x - 1 + 2x = x^3 + 3x^2 + 3x - 1
The correct result would be x^3 + 3x^2 + 3x - 1.
Answer:
it is t
Step-by-step explanation:
As in step 2 the student added -2 only at one side of equation which is against the law of addition property of equality
so the correct option from above equation is
The student did not properly apply the addition property of equality to isolate x.
SO its B
hope it helps
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