Algebra-1

To solve the quadratic equation 9x² = 4 + 7x, we can rearrange it to the standard form:
9x² - 7x - 4 = 0

Comparing this equation to the standard form ax² + bx + c = 0, we have:
a = 9
b = -7
c = -4

Applying the quadratic formula:

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

 
$...