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Sagot :
To find the value of [tex]\( h(-8) \)[/tex] for the function [tex]\( h(t) = -2(t + 5)^2 + 4 \)[/tex]:
1. Substitute [tex]\( t = -8 \)[/tex] into the function:
[tex]\[ h(-8) = -2(-8 + 5)^2 + 4 \][/tex]
2. Simplify inside the parentheses first:
[tex]\[ -8 + 5 = -3 \][/tex]
3. Substitute [tex]\(-3\)[/tex] back into the expression:
[tex]\[ h(-8) = -2(-3)^2 + 4 \][/tex]
4. Square the [tex]\(-3\)[/tex]:
[tex]\[ (-3)^2 = 9 \][/tex]
5. Substitute [tex]\( 9 \)[/tex] back into the expression:
[tex]\[ h(-8) = -2 \cdot 9 + 4 \][/tex]
6. Multiply [tex]\(-2\)[/tex] by [tex]\( 9 \)[/tex]:
[tex]\[ -2 \cdot 9 = -18 \][/tex]
7. Add [tex]\( 4 \)[/tex] to [tex]\(-18\)[/tex]:
[tex]\[ -18 + 4 = -14 \][/tex]
Thus, the value of [tex]\( h(-8) \)[/tex] is [tex]\( -14 \)[/tex].
Therefore, the correct answer is:
[tex]\[ -14 \][/tex]
1. Substitute [tex]\( t = -8 \)[/tex] into the function:
[tex]\[ h(-8) = -2(-8 + 5)^2 + 4 \][/tex]
2. Simplify inside the parentheses first:
[tex]\[ -8 + 5 = -3 \][/tex]
3. Substitute [tex]\(-3\)[/tex] back into the expression:
[tex]\[ h(-8) = -2(-3)^2 + 4 \][/tex]
4. Square the [tex]\(-3\)[/tex]:
[tex]\[ (-3)^2 = 9 \][/tex]
5. Substitute [tex]\( 9 \)[/tex] back into the expression:
[tex]\[ h(-8) = -2 \cdot 9 + 4 \][/tex]
6. Multiply [tex]\(-2\)[/tex] by [tex]\( 9 \)[/tex]:
[tex]\[ -2 \cdot 9 = -18 \][/tex]
7. Add [tex]\( 4 \)[/tex] to [tex]\(-18\)[/tex]:
[tex]\[ -18 + 4 = -14 \][/tex]
Thus, the value of [tex]\( h(-8) \)[/tex] is [tex]\( -14 \)[/tex].
Therefore, the correct answer is:
[tex]\[ -14 \][/tex]
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