Evaluate 13 − 12 x 2 13 - 12 x ^ { 2 } 13 − 12 x 2 at x = 1 2 x = \frac { 1 } { 2 } x = 2 1 .A) 7B) 15C) 10D) -11E) -20

Question

Evaluate   13 − 12 x 2 13 - 12 x ^ { 2 } 13 − 12 x 2   at   x = 1 2 x = \frac { 1 } { 2 } x = 2 1 ​   .A)  7B)  15C)  10D)  -11E)  -20

Nayelli Antunez · Accepted Answer

Final Answer : C, Explanation :   Substitute $x=\frac{1}{2}$ into the expression: 13 − 12 ( 1 2 ) 2 = 13 − 12 ⋅ 1 4 = 13 − 3 = 10 13-12\left(\frac{1}{2}\right)^2=13-12\cdot\frac{1}{4}=13-3=10 13 − 12 ( 2 1 ​ ) 2 = 13 − 12 ⋅ 4 1 ​ = 13 − 3 = 10 Therefore, the answer is choice C.

Evaluate $13 - 12 x ^ { 2 }$ at $\frac { 1 } { 2 }$ .

A) 7
B) 15
C) 10
D) -11
E) -20

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Learning Objectives

Learning Objectives

Related questions

Evaluate 13−12x213 - 12 x ^ { 2 }13−12x2 at x=12x = \frac { 1 } { 2 }x=21​ .A) 7B) 15C) 10D) -11E) -20

Definitions

Learning Objectives

Learning Objectives

Related questions

Evaluate $13 - 12 x ^ { 2 }$ at $\frac { 1 } { 2 }$ .

A) 7
B) 15
C) 10
D) -11
E) -20