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2 years ago

1. If one zero of the quadratic polynomial kx² + 3x + k is 2 then the value of k is *

Mathematics

1 answer:

kicyunya [14]2 years ago

7 0

Answer:

Step-by-step explanation:

Given one zero of the quadratic polynomial kx² + 3x + k is 2,

Substitute x = 2 in the polyomial , we get

k(2)²+3×2+k = 0

=> 4k + 6 + k = 0

5k+6 = 0

5k= -6

k= -6/5

Therefore,

Value of k = -6/5

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Answer:

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2 years ago

6/7 - 6/7 = ? Help please.

swat32

Answer:

Step-by-step explanation:

First, we should line up the fractions.

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2 years ago

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5. How many solutions does this system of equations have?

Diano4ka-milaya [45]

Answer:

$\text{\boxed{\sf{D. \ No\ solution}}}$

Step-by-step explanation:

Isolate the term of x and y from one side of the equation.

First, you have to substitute of y=-4x-1.

$\Longrightarrow: \sf{[-4x-1=-4x-9]}$

<u>Add by 4x from both sides.</u>

$\Longrightarrow: \sf{-4x-1+4x=-4x-9+4x}$

<u>Solve.</u>

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I hope this helps. Let me know if you have any questions.

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