Question:
Find the value of 3x3 + 4x2 + x - 5 when x = -3.
(A) -53 (B) -71 (C) -32
Solution:
Let f(x) = 3x3 + 4x2 + x - 5.
Substitute x = -3.
f(-3) = 3(-3)3 + 4(-3)2 + (-3) - 5
= 3(-27) + 4(9) - 3 - 5
= -81 + 36 - 3 - 5
= -53
[I hope my answer is helpful]
Noticed: [Pinag aralan namin po ito sa school at correct po ang answer ko, kaya nilagay ko na lang dito kasi baka may mga ibang students na hindi pa yan alam or naghahanap ng answers. Thank you po.]
Find the value of 3x3 + 4x2 + x - 5 when x = -3.
(A) -53 (B) -71 (C) -32
Solution:
Let f(x) = 3x3 + 4x2 + x - 5.
Substitute x = -3.
f(-3) = 3(-3)3 + 4(-3)2 + (-3) - 5
= 3(-27) + 4(9) - 3 - 5
= -81 + 36 - 3 - 5
= -53
[I hope my answer is helpful]
Noticed: [Pinag aralan namin po ito sa school at correct po ang answer ko, kaya nilagay ko na lang dito kasi baka may mga ibang students na hindi pa yan alam or naghahanap ng answers. Thank you po.]
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Step-by-step explanation:
Find the value of 3x3 + 4x2 + x - 5 when x = -3.
(A) -53 (B) -71 (C) -32
Solution:
Let f(x) = 3x3 + 4x2 + x - 5.
Substitute x = -3.
f(-3) = 3(-3)3 + 4(-3)2 + (-3) - 5
= 3(-27) + 4(9) - 3 - 5
= -81 + 36 - 3 - 5
= -53
thanks her for sharing her answer