Question

1.
A. Solve:
9 - 5 = (8 - 3) x 2 + 6=​

Answer 1

Answer:

x in (-oo:+oo)

6-((5/(8-3))*x^2)+9 = 0

6-5*(8-3)^-1*x^2+9 = 0

-1*x^2 = -15 // : -1

x^2 = 15

x^2 = 15 // ^ 1/2

abs(x) = 15^(1/2)

x = 15^(1/2) or x = -15^(1/2)

x in { 15^(1/2), -15^(1/2) }