Section: Math

29) If ^(C+x)_x-3=^x+8₃, which of the following could be an expression of C in terms of x?

C=¹₃(x-8)(x+3)
C=¹₃(x-3)(x+8)
C=¹₃(x+6)(x-4)
C=¹₃(x-6)(x+4)

Explanation

STEP ONE. Cross-multiply.
STEP TWO. Add -3x to both sides, thus isolating C.
STEP THREE. Multiply both sides * ¹/₃ to simplify 3C to C.
STEP FOUR. Break down the quadratic equation (x+6)(x-4).
Answer 3.

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