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# If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^

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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
-2X- y^2
-2x-5/8 - (1/2)^2
5/4-1/4
1

C correct

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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
x = -5/8 and y = -1/2

==> -2(-5/8) - (1/2)^2 = 5/4 - 1/4 = 1

Ans: C
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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
Bunuel wrote:
If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^2?

A) -3/2
B) -1
C) 1
D) 3/2
E) 7/4

Replacing x with $$x=-\cfrac { 5 }{ 8 }$$ and y with$$y=-\cfrac { 1 }{ 2 }$$ in the expression given:

$$-2x-{ y }^{ 2 }=\\ -2\left( -\cfrac { 5 }{ 8 } \right) -{ \left( -\cfrac { 1 }{ 2 } \right) }^{ 2 }=\\ \cfrac { 5 }{ 4 } -\cfrac { 1 }{ 4 } =\\ \cfrac { 4 }{ 4 } =\\ 1$$
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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
Bunuel wrote:
If x = -5/8 and y = -1/2,what is the value of the expression -2x - y^2?

A. $$-\frac{3}{2}$$

B. ‒1

C. 1

D. $$\frac{3}{2}$$

E. $$\frac{7}{4}$$

Substituting the given values into the expression, we have:

-2(-5/8) - (-1/2)^2

10/8 - 1/4 = 5/4 - 1/4 = 4/4 = 1

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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
$$-2(\frac{-5}{8})-(\frac{-1}{2})^2$$
$$\frac{10}{8}-\frac{1}{4}$$
$$\frac{8}{8}$$
$$1$$

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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x – y^ [#permalink]
Bunuel wrote:
If $$x = \frac{-5}{8}$$ and $$y = \frac{-1}{2}$$,what is the value of the expression $$-2x - y^2$$?

A. $$-\frac{3}{2}$$

B. ‒1

C. 1

D. $$\frac{3}{2}$$

E. $$\frac{7}{4}$$

10/8-1/4=5/4-1/4=4/4=1

IMO C

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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x y^ [#permalink]
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Re: If x = -5/8 and y = -1/2, what is the value of the expression -2x y^ [#permalink]
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