What is the discriminant of 9x^2+2=10x?

# What is the discriminant of 9x^2+2=10x?

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# Algebra Examples

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Algebra
Find the Discriminant 9x^2+2=10x

Move to the left side of the equation by subtracting it from both sides.
Substitute in the values of , , and .
Evaluate the result to find the discriminant.

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Simplify each term.

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Raise to the power of .
Multiply by .
Multiply by .
Subtract from .

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# What is the discriminant of 9×2 + 2 = 10x?

A ) –356
B ) –172
C ) 28
D ) 72

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• Its C.

First get the equation into the form: Ax^2 + Bx + C = 0 (the quadratic equation)..

We do this by subtracting 10x both sides (to get it on the other side)..

9x^2 + 2 = 10x

9x^2 – 10x + 2 = 10x – 10x

9x^2 – 10x + 2 = 0

Now the discriminant is: b^2 – 4ac

The quadratic equation is Ax^2 + Bx + C = 0

Here, A = 9, B = -10 and C = 2 so plug them in…

(-10)^2 – 4 (9)(2)

= 100 – 4 (18)

= 100 – 72

So the discriminant is 28 (c).

?
· 4 years ago

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· just now

• 9x^2 – 10x + 2 = 0
The discriminant is b^2 – 4ac
Where
a = 9
b = -10
c = 2
Hence

(-10)^2 – 4(9)(2) =
100 – 72 =
28

lenpol7
· 4 years ago

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· just now

• First rewrite the equation as

9x^2 – 10x + 2 = 0. Then the

discriminant is (-10)^2 – 4*9*2 = 100 – 72 = 28

– choice C

Robert
· 4 years ago

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· just now

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# What is the discriminant of 9×2 + 2 = 10x?a. -356b.–172c.28d. 72

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2016-05-04T09:18:08-04:00

C. 28

9x^2 – 10x + 2 = 0
Discriminant = b^2 – 4ac
= (-10)^2 – 4(9)(2)
= 100 – 72
= 28

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