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2 years ago

Solve the quadratic equation: 5x²-2x-25=0

Mathematics

1 answer:

NARA [144]2 years ago

4 0

Here’s the solution

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Brainly for questions 4 & 5

dimulka [17.4K]

Answer:

its a quiz you might get banned

Step-by-step explanation:

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3 years ago

7. Solve the equation using the quadratic formula.<br> 3x^2 = 2(2x+1)

suter [353]

Answer:

$\rm x = \dfrac{2+\sqrt{10}}{3},\dfrac{2-\sqrt{10}}{3}$

Step-by-step explanation:

A quadratic equation is given to us and we need to solve the equation using the quadratic formula . The given equation is ,

$\rm\implies 3x^2=2(2x+1)$

Open the brackets in RHS ,

$\rm\implies 3x^2= 4x + 2$

Transpose all the terms to LHS ,

$\rm\implies 3x^2-4x-2=0$

The general form of a quadratic equation is ax² + bx + c = 0 , and the roots of the equation by the Quadratic Formula ( Shreedhacharya's Formula ) is given by ,

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

Using the quadratic formula , we have ,

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

Simplify ,

$\rm\implies x =\dfrac{4 \pm \sqrt{16+24 }}{6}$

$\rm\implies x = \dfrac{4\pm \sqrt{40}}{6}$

$\rm\implies x =\dfrac{4\pm 2\sqrt{10}}{6}$

$\rm\implies\boxed{\pink{\frak{ x = \dfrac{2+\sqrt{10}}{3},\dfrac{2-\sqrt{10}}{3}}}}$

8 0

2 years ago

In an instant lottery, your chances of winning are 0.1. if you play the lottery five times and outcomes are independent, the pro

lesya692 [45]

The probability that you lose all five times will be 0.59.

<h3>How to calculate the probability?</h3>

From the information given, the chances of winning are 0.1. Therefore, the chance of losing will be:

= 1 - 0.1 = 0.9

Therefore, the probability that you lose all five times will be:

= 0.9 × 0.9 × 0.9 × 0.9 × 0.9

= 0.59

Learn more about probability on:

brainly.com/question/24756209

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6 0

2 years ago

Can you help prove this identity?

mario62 [17]

Its six idk really ask your teacher for more help

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3 years ago

Factor the algebraic expression 18a + 14 18a + 14 = (Factor completely.)<br>

stich3 [128]

Answer:

You cannot factor that any more.

Step-by-step explanation:

The equation is as simple as it can be.

5 0

2 years ago

Solve the quadratic equation: 5x²-2x-25=0​

Solve the quadratic equation: 5x²-2x-25=0