What is the first step when rewriting y=3x^2 +9x-18 in the form y=a(x-h)^2 +k?

ANSWER

3 must be factored from 3x² +9x

EXPLANATION

The given function is

To write the given function in vertex form, we need to complete the square.

But before we come complete the square, we must ensure that the coefficient of the quadratic term is unity.

Hence we factor 3 from 3x² +9x to obtain:

The first choice is correct.

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.