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Umnica [9.8K]
3 years ago
9

Factorise x2 + 13x + 42

Mathematics
1 answer:
kirill [66]3 years ago
8 0

Answer:

you can use the formula "<em>Cross method" </em>  in which the last number of the equation is the sum of 2 number multiplication that also sums the 2nd num of the equation.

so it becomes

(x +6)(x +7)

WHY?

Bcs when u multiply 6 x 7 = 42 ( the last number of the equation)

      when u sum 6 + 7 = 13 ( the 2nd number of the equation)

Hope this helps :)

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Answer:

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Step-by-step explanation:

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What is the simplified value of the exponential expression 16 superscript one-fourth? 2 4
USPshnik [31]

The simplified value of the exponential expression is 2.

<h3>How to get the simplified expression?</h3>

Here we need to simplify the expression:

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First, you need to remember that:

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Then we can just write:

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And now, you can remember that:

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If you want to learn more about exponential expressions:

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2 years ago
The graph illistrates a reflection of QPR. what line is QPR reflected across to create Q'P'R
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Answer:

D. x = t√y-7

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