3 years ago

How to find the minimum value of an expression

Mathematics

2 answers:

AURORKA [14]3 years ago

8 0

Your answer is positive

Tanya [424]3 years ago

7 0

f(x)=9x²+24x+1
f(x)=(3x)²+ 2×3x× 4 + 1
= (3x)²+2×3x×4 +16 -16 +1
=. ( 3x+4)² -15. -------(1)
then (3x+4)² ≥0
least value of (3x+4)² is 0
putting in equation 1
= 0-15 =-15
- 15 is the least value

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