Question

What is the first step in solving a quadratic equation of the form given below?

(ax + b)2 = c
A. Divide both sides by c
B. Use the zero product rule
C. Factor out a common factor
D. Take the square root of both sides

Answer 1

Any idea?

Answer 2

not really

Answer 3

\[c = (ax+b)^2\] just curious what are we solving for :o

Answer 4

But anyways, take a stab at this, think for a bit what you would do to isolate x I guess, first step?

Answer 5

A or C?

Answer 6

Good guess, so you know for sure we can eliminate B and C, they might work in a parallel universe with different algebra rules haha.
Also, solving for quadratic equation here they mean = 0 or solving for x?

Answer 7

Well it seems reasonable to solve for x, so can we eliminate anything else?

Answer 8

so A?

Answer 9

What would make the "squareroot" on the left side = 1, using exponents

Answer 10

Mhm not quite

Answer 11

i meant eliminate A

Answer 12

\[c = (ax+b)^2 \implies \sqrt{c} = \sqrt{(ax+b)^2} \implies \sqrt{c} = (ax+b)^{2/2} \implies \sqrt{c} = (ax+b)\] phew I need some sleep

Answer 13

Yes, so our answer is D

Answer 14

thank you

Answer 15

no it was right lol thank you

Answer 16

Oh ok lol, ignore this than, the wording confused me!

Answer 17

Thank you Lewis

Answer 18

no problem