Question

Solve.

Answer 1

4 x² + 6 = 40
4 x² + 6 - 6 = 40 - 6
4 x² = 34
x² = 34 : 4
x² = 8.5
x = √ (8.5)
x 1 = 2.9154759 ≈ 2.92 ( to the nearest hundredth )
x 2 ≈ - 2.92
Answer:The solutions are approximately 2.92 and - 2.92.

Answer 2

Answer:

the solutions are approximately are  2.91 and -2.91

Step-by-step explanation:

Given the equation:

$4x^2+6=40$

Subtract 6 from both sides we have;

$4x^2=34$

Divide both sides by 4 we have;

$x^2=8.5$

Take square-root both sides we have;

$x =\pm \sqrt{8.5}$

Simplify:

$x =\pm 2.91548..$

Round to the nearest hundredths

$x = \pm 2.92$

Therefore, the solutions are approximately are  2.92 and -2.92