Mathematics: What is the solution to the equation? 4 x squared − 3 equals 77 choose all answers that are correct. a. 5 square root of 2 b. 2 square root of 5 c. − 2 square root of 5 d. − 5 square root of 2

What is the solution to the equation? 4 x squared

Ответ:

maligv

06.01.2022

The answers are B. 2 square root of 5 and C. − 2 square root of 5.

$4 x^{2} -3=77$
$4 x^{2} =77+3$
$4 x^{2} =80$
$x^{2} =80:4$
$x^{2} =20$
$x= \sqrt{20}$
$x= \sqrt{4*5}$
$x= \sqrt{4}* \sqrt{5}$

Since √4 could be either -2 or +2, the solutions are:
$x=2 \sqrt{5}$ or $x=-2 \sqrt{5}$

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Ответ:

ibarral37102

15.10.2021

Mathematics

7,12.2

Step-by-step explanation:

100+49=149

√149≈12.2

x^2+49=100

x^2=51

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What is the solution to the equation?

4 x squared − 3 equals 77
choose all answers that are correct.

a.
5 square root of 2

b.
2 square root of 5

c.
− 2 square root of 5

d.
− 5 square root of 2

Ответ:

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