Question

5)x²-13x + q=0 x=-7​

Answer 1

Объяснение:

$- 7{}^{2} - 13 \times ( - 7) + q = - 49 + 91 + q = 42 + q$

Answer 2

To find the value of q when x = -7 in the equation x² - 13x + q = 0, you can substitute -7 for x and solve for q:

x² - 13x + q = 0

Substitute x = -7:

(-7)² - 13(-7) + q = 0

Simplify the equation:

49 + 91 + q = 0

Now, add 49 and 91:

140 + q = 0

To isolate q, subtract 140 from both sides of the equation:

q = -140

So, when x = -7, the value of q is -140.