2 years ago

Simplify the following expression: x(x+2) - x(x+3)

Mathematics

1 answer:

kiruha [24]2 years ago

3 0

Answer:

-x

Step-by-step explanation:

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What are the solutions to the quadratic equation x^2-16=0

maks197457 [2]

Good evening.

This is a incomplete quadratic equation, because it does not have the term bx. Therefore, we can solve this faster with the following strategy:

$\mathsf{x^2 - 16 = 0}$

Add 16 to both sides:

$\mathsf{x^2 - 16 + 16 = 0 + 16}\\ \\ \mathsf{x^2 = 16}$

Take the square root:

$\mathsf{\sqrt {x^2} = \pm\sqrt{16}}\\ \\ \mathsf{\boxed{\mathsf{x = \pm4} }}$

Therefore:

$\boxed{\boxed{\mathsf{S=\{-4, \ +4\}}}}$

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3 years ago

What is the least number of acute angles of quadrilateral can have

Ira Lisetskai [31]

Two acute angles is the least amount.

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3 years ago

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nlexa [21]

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B is the correct one. Second.