Mathematics: Can someone plz help me answer number 3

Given:The expression isTo find:The factors of given expression.Solution:We have,Put ,Splitting the middle term, we getPut , Therefore, the factored form of given expression is ....

Can someone plz help me answer number 3

Ответ:

icantspeakengles

19.03.2020

Mathematics

8 yards wide

Step-by-step explanation:

8*5=40

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Ответ:

neharikakalasapkkam

04.02.2021

Mathematics

Given:

The expression is

x^4-10x^2+9

To find:

The factors of given expression.

Solution:

We have,

x^4-10x^2+9

(x^2)^2-10x^2+9

Put x^2=t ,

=t^2-10t+9

Splitting the middle term, we get

=t^2-9t-t+9

=t(t-9)-1(t-9)

=(t-9)(t-1)

Put t=x^2t ,

=(x^2-9)(x^2-1)

=(x^2-3^2)(x^2-1^2)

=(x-3)(x+3)(x-1)(x+1) $[\because a^2-b^2=(a-b)(a+b)]$

Therefore, the factored form of given expression is (x-3)(x+3)(x-1)(x+1) .

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Can someone plz help me answer number 3

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