Question

10 x -3. (2x - 2 )= 5. (x + 1 )=-20

Answer 1

(10x-3).(2x-2)= 5.(x+1)=-20
20x²-20x-5x+5=5x+5=-20
20x²-25x+5=5x+5=-20
20x²-30x= -20

∆= -4.(20).0
∆=0

x=-(b) ± √∆ / 2.(a)
x=30±0/40
x=30/40

S:{30/40}