A binary operation ,*, is defined on the set R, of real numbers by \(a * b = a^{2} + b + ab\). Find the value of x for which \(5 * x = 37\).
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
Correct Answer: Option B
Explanation:
\(a * b = a^{2} + b + ab\)
\(5 * x = 5^{2} + x + 5x = 37\)
\(25 + 6x = 37 \implies 6x = 12\)
\(x = 2\)
\(a * b = a^{2} + b + ab\)
\(5 * x = 5^{2} + x + 5x = 37\)
\(25 + 6x = 37 \implies 6x = 12\)
\(x = 2\)