Question

Tolong bantu.ngerjain soal 21-22 thanks

Answer 1

21. x²-2x-15=0
(x-5) (x+3)=0
x₁>x₂
x₁= 5
x₂=-3
3x₁-2x₂= 3.5-2.-3=21

22. -2x² + 7x+15=0
2x²-7x-15=0
(2x+3)(x-5)=0
x₂>x₁
x₂=5
x₁=-3/2
6x₁+4x₂= 6.-3/2 + 4.5 = -9 + 20 = 11