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3 years ago

15

Is

ddle" class="latex-formula">
A polynomial?

2 answers:

Eddi Din [679]3 years ago

8 0

Answer:

no a polynomial has others like y and x and even z. there are more

Step-by-step explanation:

Viktor [21]3 years ago

5 0

No, a polynomial has one or more unknowns such as x, y, z.

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Square root of the quantity x minus 2 end quantity plus 8 equals x

Butoxors [25]

ANSWER

x=11

EXPLANATION

We want to solve the equation:

$\sqrt{x - 2} + 8 = x$

Add -8 to both sides:

$\sqrt{x - 2} = x - 8$

Square both sides of the equation to get:

$(\sqrt{x - 2} )^{2} =( x - 8)^{2}$

$x - 2 = {x}^{2} - 16x + 64$

Rewrite in the form ax² +bx+c=0

${x}^{2} - 16x - x + 64 + 2 = 0$

${x}^{2} - 17x + 66 = 0$

Factor to get,

$(x - 11)(x - 6) = 0$

This implies that,

$x = 11 \: or \: x = 6$

Checking for extraneous solutions.

When x=6, the original equation becomes,

$\sqrt{6- 2} + 8 = 6$

$\sqrt{4 } + 8 = 6$

2+8= 6 is not true.

x=6 is an extraneous solution.

When x=11, the original equation becomes,

$\sqrt{11- 2} + 8 = 11$

$\sqrt{9} + 8 = 11$

$3 + 8 = 11$

This is true, hence x=11 is the only solution.

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3 years ago

Joe is 1.6 m tall. His shadow is 2 m long when he stands 3 m

Alla [95]

Answer:

Step-by-step explanation:

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2 years ago

What number is 80% of 65

Pavel [41]

Answer:

80% of 65 is 52

Step-by-step explanation:

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3 years ago

Read 2 more answers

WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST

alexira [117]

Answer: 239 m^2

Step-by-step explanation:

Find the area for parts of the shape first.

12 x 5 = 60 x 2 (2 same looking parts) = 120

17 x 7 = 119

Add together values:

120 + 119 = 239 m^2

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If 3x + 2y= 14 and 5x + 3y = 12, then find the value of 5x- y.

Ksju [112]

I think the answer would be negative 124 NOT SURE

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3 years ago