What’s the answer but you also have to simplify

Mathematics

1 answer:

Jlenok [28]2 years ago

6 0

Answer:

The answer is 9x² + 3x - 2.

Step-by-step explanation:

1) Collect like terms.

$(7x^{2} + {2x}^{2} ) + ( - 2x + 5x) + (8 - 10)$

2) Simplify.

${9x}^{2} + 3x - 2$

Therefor, the answer is 9x² + 3x - 2.

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zheka24 [161]

Answer:

Step-by-step explanation:

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2 years ago

Mark says that the number square root two is irrational number because he can write it as a fraction square root two over one is

Elan Coil [88]

Answer:

Step-by-step explanation:

A rational number are numbers that can be expressed as as fraction. They can be expressed as a ratio of two integers. An irrational is quite the opposite. An irrational number cannot be expressed as a ratio of two integers.

Taking square root of two as an example;

√2 cannot be expressed as a ratio of two integers because the result will always be a decimal. If expressed as √2/1, it is still not a rational number because of the square root of 2 at the numerator. Square root of 2 is not an integer even though 1 is an integer.

Mark is wrong because √2 is irrational and it is irrational because it cannot be expressed as a ratio of two integers not due to the fact that he can write it as a fraction.

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2 years ago

Simplify each expression: -(14 + x)

bearhunter [10]

Answer:

-14-x

Step-by-step explanation:

Distribute the negative.

7 0

2 years ago

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