Question

Nilai x+y yg memenuhi y=2x²-5x -3 Dan y=1-7x

Answer 1

(2x+1)(x-3)
x = -1/2 atau x=3
y = 1 - ( 7 . -1/2) atau y = 1 - ( 7.3 ) = -20
y = 1 + 7/2 = 9/2

x+y satu : -1/2 + 9/2 = 4
x+y dua : 3 - 20 = -17
smoga mmbantu

Answer 2

2x²-5x-3 = 1-7x
2x²-5x+7x-3-1=0
2x²+2x-4=0
(-2x+2)(-x-2)
x1=1 V x2=-2