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Mashutka [201]
2 years ago
14

9 - x2 + 2xy - y2 Factorise

Mathematics
1 answer:
LenaWriter [7]2 years ago
5 0

9-x.2+2xy-y.2

9-2x+2xy-2y

-2x+2xy-2y+9

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Adina has a rectangular garden that measures 9 m wide by 13 m long. She wants to
MrRissso [65]
9*13=117
12*16=192

We increased three meters to both the length and width of the garden.
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3 years ago
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Rationalize the denominator and simplify 6/√2-√3
ss7ja [257]
Answer:

<span>=3<span>√6</span>−3<span>√5</span></span>

Explanation:

<span>3<span><span>√5</span>+<span>√6</span></span></span>

We rationalise the denominator by multiplying the expression by the conjugate of the denominator. <span><span>√5</span>−<span>√6</span></span>

<span><span>3⋅<span>(<span>√5</span>−<span>√6</span>)</span></span><span><span>(<span>√5</span>+<span>√6</span>)</span>⋅<span>(<span>√5</span>−<span>√6</span>)</span></span></span>

<span>=<span><span>3⋅<span>(<span>√5</span>)</span>+3⋅<span>(−<span>√6</span>)</span></span><span><span>(<span>√5</span>+<span>√6</span>)</span>⋅<span>(<span>√5</span>−<span>√6</span>)</span></span></span></span>

<span>=<span><span>3<span>√5</span>−3<span>√6</span></span><span><span>(<span>√5</span>+<span>√6</span>)</span>⋅<span>(<span>√5</span>−<span>√6</span>)</span></span></span></span>

<span>Applying identity
<span><span>(a+b)</span><span>(a−b)</span>=<span>a2</span>−<span>b2</span></span> to the denominator.</span>

<span>=<span><span>3<span>√5</span>−3<span>√6</span></span><span><span><span>(<span>√5</span>)</span>2</span>−<span><span>(<span>√6</span>)</span>2</span></span></span></span>

<span>=<span><span>3<span>√5</span>−3<span>√6</span></span><span>5−6</span></span></span>

<span>=<span><span>3<span>√5</span>−3<span>√6</span></span><span>−1</span></span></span>

<span>=−3<span>√5</span>+3<span>√6</span></span>

<span>=3<span>√6</span>−3<span>√<span>5
</span></span></span>

5 0
3 years ago
Order 3/2, 5/8, 9/4, 1 &amp; 7/8 from least to greatest
Bogdan [553]

Answer:

9/4, 3/2, 1, 7/8, 5/8

Step-by-step explanation:

3 0
3 years ago
What is -86+(-13) what is the answer
ValentinkaMS [17]
It will help you.

And the answer is -99 feet below the surface.

-86+(-13)
= -99
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3 years ago
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What is equivalent to 6 exponent 8
charle [14.2K]
6^8 = 1679616 that is the answer sir
7 0
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