Question

Solve: 7c^(2)+38c=24 Note: Use a comma to separate multiple solutions. Er

Answer 1

c = 4/7, -6.

Explanation:

7 c² + 38 c - 24 = 0.

7 × 24 = 7×3×2×2×2 = 42 × 4

42 - 4 = 38.

7 c² + 42 c - 4 c - 24 = 0

7 c (c + 6) - 4 ( c + 6) = 0

(7 c - 4) (c + 6) = 0

c = 4/7 , or -6.