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3. The only solution of the equation x^2 + bx + 16 = 0 is x = 4. What is the value of b? A.) b = –16 B.) b = –8 C.) b = 8 D.) b = 16

3. The only solution of the equation x^2 + bx + 16 = 0 is x = 4. What is the value of b? A.) b = –16 B.) b = –8 C.) b = 8 D.) b = 16
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3. The only solution of the equation x^2 + bx + 16 = 0 is

x = 4. What is the value of b?

A.) b = –16

B.) b = –8

C.) b = 8

D.) b = 16

asked
User Wumpz
by
8.6k points

1 Answer

5 votes

4^2+b\cdot4+16=0\\ 16+4b+16=0\\ 4b=-32\\ b=-8
answered
User Timka
by
8.3k points
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