Yes it is. Ax+By=C is standard form. :)
Two numbers that add up to -19 and multiply to 48 are -16 and -3:

So, the solutions come from each parentheses: x+4=0, x-4=0, and x^2-3=0.
x+4=0
x = -4
x-4=0
x = 4
x^2-3=0
x^2 = 3
x = +/- √3
So, the solutions are -4, -√3, √3, and 4.
(3^6 / 3^5)^2 = (3^(6 - 5))^2 = (3^1)^2 = 3^2 = 9
Answer: 234
Step-by-step explanation: 78 * 3 = 210 + 24 = 234
3/4 * 2/2 = 6/8 ;; an equivalent fraction to 3 over 4 would be 6 over 8, or 6/8