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frez [133]
3 years ago
13

The what value complete the square for the expression x squared plus 16x

Mathematics
1 answer:
Troyanec [42]3 years ago
6 0
Take the coefficient of the x-term, half it, then square that. add this to both sides

x² + 16x. coefficient of x is 16. half of 16 is 8. 8²=64

x² + 16x + 64 =64. this is your answer but to continue

x² + 16x + 64 = 64
(x+8)² = 64
x+8 = ✓64
x+ 8 = ±8
x = 0 or -16
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