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Plug all three answers in and see which one does not equal 0
A: 2(1)+3(1)-7-12≠0
B: 2(6)+0-0-12=0
C: 2(3)+3(3)-3-12=0
So A. I don't know why it says two (?) points?
Answer:
Option A
Step-by-step explanation:
Given
We know that the formula is:
The middle term is:
x which should be equal to 2ab. So,
So we know now that we will add (1/2)^2 = 1/4 in the given expression to complete the square as the last term is square in the formula.
The expression will become:
Option A is correct ..
Answer:
B. 4x^2
Step-by-step explanation:
Volume of the cube