Question

If 5x2 + x² -45x + k



is completely divisible by x+ 3 then find the value of k​

Answer 1

Answer:

fist find the value of x and then put the value in the equaton by equalling 0

Answer 2

Answer:

x = -3

5x2 + x2 -45x + k = 0

5(-3)2 + (3)2 -45(3) + k = 0

45 + 9 -135 + k = 0

54 - 135 + k = 0

-81 + k = 0

-81 = -k

k = 81