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Jet001 [13]
3 years ago
14

If x = -3 calculate the value of 2xsquared+x

Mathematics
2 answers:
pochemuha3 years ago
5 0
33. 2x-3= -6
-6^2(squared) = 36 
36 +(-3) = 33
Tom [10]3 years ago
4 0
The answer would be 15. 

Substitute in the numbers and use order of operations. 

2(-3)^2 + (-3)
2(9) - 3
18 - 3
15
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Linear equation is the equation in which the highest power of the unknown variable is always 1.The equation which helps determine the distance x on each side of the mirror is ,

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<h3>Given information-</h3>

The length of the mirror is 36 inches.

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The linear equation has to find out for the distance <em>x.</em>

<em />

<h3>Linear equation-</h3>

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As one feet is equal to the 12 inches. Thus the length l of the mirror in the feet is,

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The distance on each side of the mirror is <em>x. </em>This distance is equal at both side as the mirror is centered. The distance on each side of the mirror is,

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Now the the wall is 18 feet wide which is equal to the distance each side of the mirror and the distance of the mirror. As the mirror is 3 feet wide. Thus the equation which determine the distance x on each side of the mirror can be given as,

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Hence the equation which helps determine the distance x on each side of the mirror is ,

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Learn more about the linear equation here;

brainly.com/question/2263981

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