Question

9x^2+30x+25=64

Answer 1

A good start is subtracting 64 from both sides.\[ \color{Black}{\Rightarrow 9x^2 + 3x + 25 - 64 = 0}\] Simplify, and solve the quadratic equation.

Answer 2

the 9x^2 is what I am confused about.

Answer 3

confused ??

Answer 4

u can solve it by factorization...

Answer 5

(9x^2+3x)(25-64)

Answer 6

9x2+30x+25=64
9x2+30x+25-64 = 0
9x2+30x-39 = 0
9x2 -9x + 39x -39 = 0
9x(x-1) +39 (x-1) = 0
(9x +39) (x-1) = 0

so, x = -39/9 and x =1....

Answer 7

sorry, but I do know the answer involves imaginary numbers.

Answer 8

Actually no...

The solutions for x as an answer does not involve imaginary #'s, and it's not 59/3

Answer 9

@Ganpat is correct.

Answer 10

ah..so my answer was wrong...sorry

Answer 11

With the imaginary line, it's the intersection: