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Maru [420]
3 years ago
11

Solve for x in the equation 2xsquared-5+1=3.

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
4 0

Answer:

x = 1.87

Step-by-step explanation:

2x^2 - 5 + 1 = 3

2x^2 = 3 + 5 - 1

2x^2 = 7

x^2 = 7/2

x = √3.5

x = 1.87082.....

x = 1.87 ( 3 significant figures )

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When you subtract a negative number you automatically change it to adding a positive number.

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p = -161/18

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4 years ago
Find the value of the polynomial 3x<br> 3 – 4x<br> 2+ 7x + 5, when x = 3 and also when<br> x = –3.
babymother [125]

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71

-133

Step-by-step explanation:

Given the polynomial :

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3 years ago
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