Answer:
the correct answer should be option 2 srry if wrong
Answer:
(-1)^2 = +1
Step-by-step explanation:
(-1)(-1) is equivalent to (-1)^2, and vice versa. Recall that when two negative numbers are mult. together, the product is positive. Thus, (-1)^2 = +1.
Answer:
2
Step-by-step explanation:
Answer:
A, D
Step-by-step explanation:
ANSWER

EXPLANATION
The quadratic equation given to us is

We add half the square of the coefficient of

to both sides of the equation to obtain,

This implies that,

The right hand side simplifies to

The left hand side is a perfect square.
This gives us

We take the square root of both sides

This evaluates to

We make x the subject.

We now split the square root sign to get
.


The correct answer is A.