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3 years ago

(x2 - 2)(-5x2 + x) = (x2)(-5x²)+(x2)(x)+(-2)(-5x2) + (-2)(x) is an example of:

Mathematics

1 answer:

KatRina [158]3 years ago

4 0

Answer:

FOIL

Step-by-step explanation:

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Factor 20w - 15.<br> please someone help!

CaHeK987 [17]

Answer:

5( 4w -3)

Step-by-step explanation:

just pulled out a 5

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2 years ago

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mylen [45]

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2 years ago

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Anna71 [15]

Answer:

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3 years ago

Solve the quadratic equation<br> give your answer to 2 decimal places<br> : 3x^2+x-5=0

Dima020 [189]

Given:

The quadratic equation is:

$3x^2+x-5=0$

To find:

The solution for the given equation rounded to 2 decimal places.

Solution:

Quadratic formula: If a quadratic equation is $ax^2+bx+c=0$ , then:

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

We have,

$3x^2+x-5=0$

Here, $a=3,b=1,c=-5$ . Using the quadratic formula, we get

$x=\dfrac{-1\pm \sqrt{1^2-4(3)(-5)}}{2(3)}$

$x=\dfrac{-1\pm \sqrt{1+60}}{6}$

$x=\dfrac{-1\pm \sqrt{61}}{6}$

$x=\dfrac{-1\pm 7.81025}{6}$

Now,

$x=\dfrac{-1+7.81025}{6}$

$x=1.13504167$

$x\approx 1.14$

And

$x=\dfrac{-1-7.81025}{6}$

$x=-1.468375$

$x\approx -1.47$

Therefore, the required solutions are 1.14 and -1.47.

3 0

2 years ago

Hellp PLZZzzzzzzzxxxmxxxxxxxxxx

Andreyy89

Answer:

12. We use Rational numbers when the number is in P/q form

we don't use integers because they are not in p/q form

13. Aron is wrong . he is not correct

an opposite of rational number can out be negative it should be irrational number

opposite of integers are negative that's why

*so opposite of rational numbers will ne irrational numbers not negative

14. Greatest to least

-3.02 , -4 , -4.09 , -4.32, -4,35 , -5.11

8 0

2 years ago