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2 years ago

Factorise 49x²-y² class 8

Mathematics

2 answers:

kondor19780726 [428]2 years ago

8 0

Answer:

(7x-y)(7x+y)

Step-by-step explanation:

Charra [1.4K]2 years ago

6 0

Answer:

(7x-y)×(7x+y)

Step-by-step explanation:

49x²-y²

7²x²-y²

(7x²)-y²

(7x-y)×(7x+y)

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Which of the following are roots of the polynomial function?

Bingel [31]

Answer:

1 and -5

Step-by-step explanation:

$~~~~~x^3+3x^2-9x+5=0\\\\\implies x^3-x^2+4x^2-4x-5x+5=0\\\\\implies x^2(x-1)+4x(x-1)-5(x-1)=0\\\\\implies (x-1)(x^2 +4x -5) = 0\\\\\implies (x-1)(x^2+5x -x -5) = 0\\\\\implies (x-1)[x(x+5) -(x+5)] =0\\\\\implies (x-1)(x-1)(x+5)= 0\\\\\implies (x-1)^2(x+5) = 0\\\\\implies x = 1,~~ x = -5$

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1 year ago

What fraction is bigger 5/8 or 7/15

Zolol [24]

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2 years ago

Read 2 more answers

In the Isoceles triangle, the legs

aalyn [17]

Check the picture below.

since we know that x = 3/7, we can then plug that on either of the twin legs, since it's an isosceles, and get the length of each leg, so say let's plug it in 5x + 16

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Aleksandr-060686 [28]

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2 years ago

Factorise 49x²-y² class 8​

Factorise 49x²-y² class 8