Question

FAN AND MEDAL !

In the function f(x) = 4(x^2 − 6x + ____) + 20, what number belongs in the blank to complete the square?

Numerical Answers Expected!

Answer 1

@johnweldon1993

Answer 2

So to complete the square you take half the coefficient of the 'x' which is 6...so 3...then square it....so 9....and add it to both sides...

So this is 9 :)

Answer 3

The answer is 9 ?

Answer 4

Yes @yeah_i_suck_at_math

Answer 5

Thanks, can you help me with another one ?

Answer 6

Of course :)

Answer 7

Two sets of quadratic equations are shown below in various forms.

Line 1: x2 + 3x + 2 (x + 1)(x + 2) (x + 1.5)2 − 0.25
Line 2: x2 + 5x + 6 (x + 2)(x + 3) (x + 2.5)2 + 6.25

Which line contains three equivalent expressions?

Line 1 only

Line 2 only

Both Line 1 and Line 2

Neither Line 1 nor Line 2