Question

Last one lol Thanks Bro...

The only solution of the equation x2 + bx + 16 = 0 is x = 4. What is the value of b?

b = –16
b = –8
b = 8
b = 16

Answer 1

`\heartsuit` If x = 4 is the Only Solution of the Equation x² + bx + 16 = 0

`\heartsuit` Then the Value x = 4 should satisfy the Given Equation

⇒ (4)² + b(4) + 16 = 0

⇒ 16 + 4b + 16 = 0

⇒ 4b + 32 = 0

⇒ 4b = -32

⇒ b = -8