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3 years ago

How do I multiply fractions by whole numbers

2 answers:

8 0

First write the whole number as fraction and simply place the whole number in order one

And then multiply the numbers of two fractions and multiply the denominators of the two numbers and then you have to simplify....

Volgvan3 years ago

5 0

Multiplying fractions by whole numbers:
1. You have to convert the whole number into an improper fraction.
2. You then multiply the fractions straight across.
Ex: 2/3 × 6 =2/3 × 6/1 = 2×6/3×1= 12/3= 4

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What is the completely factored form of x4 8x2 – 9?

Alinara [238K]

For this case we have the following polynomial:

$x ^ 4 + 8x ^ 2 - 9$

We make the following change of variables:

$u = x ^ 2$

Rewriting we have

$u ^ 2 + 8u - 9$

Factoring the second order polynomial we have:

$(u + 9) (u-1)$

Then, returning the change we have:

$(x ^ 2 + 9) (x ^ 2-1)$

Finally, we factor the expression in the parentheses of the second term:

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Answer:

the completely factored form is:

$(x ^ 2 + 9) (x + 1) (x-1)$

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3 years ago

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Please help me out! :)

skad [1K]

3x-11=x+23
-x -x
2x-11=23
+11 +11
2x=34
x=17

3(17)-11 17+23
=40 =40

explanation ;
you would equal them because they are congruent . & you substitute x for 17 in each equation to find out the degrees of both of the angles :)

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Answer:

Step-by-step explanation:

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