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frosja888 [35]
3 years ago
14

Factorise

"absmiddle" class="latex-formula">
Mathematics
2 answers:
STatiana [176]3 years ago
7 0

Answer:

(x-11)(x+11)

Step-by-step explanation:

x^2 -121

x^2 -11^2

This is the difference of squares  a^2 - b^2 = (a-b)(a+b)

(x-11)(x+11)

Flauer [41]3 years ago
3 0

Answer:

(x+11)(x-11)

Step-by-step explanation:

Hello!

We are given the expression x²-121, and we want to factor it

The expression is a difference of squares expression.

The formula for the difference of squares is written as a²-b² can be factored as (a-b)(a+b)

121 is 11 squared, and x² is x squared

So that means that a=x, and b=11 in this case

Now substitute those values into the formula

a²-b²=x²-121=<u>(x+11)(x-11)</u>

Hope this helps!

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