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2 years ago

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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The product of six and a number is multiplied by nine

alex41 [277]

6 + y × 9 (the x is a times sign btw)

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3 years ago

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Which is the denominator and which is the numerator?

Mashcka [7]

Hey there!

The numerator is the top part of the fraction and the denominator is the bottom part of the fraction.

For example, in the fraction $\frac{1}{2}$ , 1 would be the numerator and 2 would be the denominator.

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3 years ago

Brandon buys a radio for $46.07 in a state where sales Tax is 7%

Radda [10]

Answer:

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3 years ago

A ______________ divides a segment or angle in half.

densk [106]

Answer:

bisector

Step-by-step explanation:

A bisector divides a segment or angle in half.

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2 years ago

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Which equation is related to √x+10-1=x ? The square root is over the x+10

Sergio [31]

Answer:

(b) x + 10 = x^2 + 2x + 1

Step-by-step explanation:

The equation can be transformed to one without the radical by isolating the radical and squaring both sides.

$\sqrt{x+10}-1=x\qquad\text{given}\\\\\sqrt{x+10}=x+1\qquad\text{add 1 to both sides}\\\\x+10=(x+1)^2\qquad\text{square both sides}\\\\\boxed{x+10=x^2+2x+1}\qquad\text{eliminate parentheses}$

_____

Additional comment

In typeset formulas, radicals, fraction bars, and superscript formatting serve to group expressions. In plain text, the only available grouping symbol is parentheses.

$\sqrt{x+1}}\ \Rightarrow$ √(x+1)

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2 years ago