Question

If aΔb=a² + ab + b², then what is the value of -3Δ5?

A. 4
B. -14
C. -7
D. 1
E. 19

Answer 1

E) 19

Explanation:

To find the value of -3Δ5, we need to substitute -3 and 5 into the equation: aΔb = a² + ab + b².

So, we have:

-3Δ5 = (-3)² + (-3)(5) + (5)²

= 9 - 15 + 25

= 19

Therefore, the answer is E) 19.