tolong no 3 yaa makasihh

a. x² + 3x =10
x² + 3x - 10 = 0
(x + 5)(x - 2) = 0
~x + 5 = 0
  x = -5
~x - 2 = 0
  x = 2
HP = {-5, 2}

b. 3x² + 11x = 20
3x² + 11x - 20 = 0
(3x - 4)(x + 5) = 0
~3x - 4 = 0
  3x = 4
  x = 4/3
~x + 5 = 0
  x = -5
HP = {4/3, -5}