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3 years ago

4x-6y when x=3 and y=-2

Mathematics

1 answer:

nlexa [21]3 years ago

4 0

4(3)-6(-2)
12- -12
12+12
24

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Find a polynomial of degree 3 with zeros of 4, 2i and -2i

andre [41]

$(x-4)(x-2i)(x+2i)=\\
(x-4)(x^2+4)=\\
x^3+4x-4x^2-16=\\
x^3-4x^2+4x-16$

7 0

3 years ago

(X^2+y^2)^2 polynomial identify. Simplify

Alexxx [7]

Answer:

$(x^{2}+ y^{2})^{2} =x^{4}+2x^{2}y^{2}+y^{4}$

Step-by-step explanation:

(X^2+y^2)^2 polynomial identify. Simplify

i.e

$(x^{2}+ y^{2})^{2} = ?$

Solution:

We have the identity,

$(A+B)^{2}=A^{2}+2AB+B^{2}$

In the Question

$A=x^{2}$

$B=y^{2}$

Substituting in the identity we get

$(x^{2}+ y^{2})^{2} =(x^{2})^{2}+2(x^{2})(y^{2})+(y^{2})^{2}$

Also we have

$(x^{a})^{b} =x^{a\times b}$

$(x^{2}+ y^{2})^{2} =x^{4}+2x^{2}y^{2}+y^{4}$ Which is the required

8 0

4 years ago

What is 90 plus negative 35

Dima020 [189]

The addition of a negative is basically the same as subtraction.

Since your adding -35 to 90, your just taking away 35 from 90.

You would set up the problem like this:

90 + – 35

Or you could write it out like this:

90 – 35

Either way, 90 + – 35 = 55

7 0

3 years ago

5m + 2 = 47<br> What is the value of m

Volgvan

The value of m is 9. See if you multiply 9 by 5 you get 45 and add two to get 47.

5 0

4 years ago

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Paraphin [41]

Answer:

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