Question

Please help I will give out brainliest

Answer 1

Answer:

Step-by-step explanation:

Our function is : 3x²-3x-1

• 3x²-3x+2=2
• 3x²-3x-1+3=2
• 3x²-3x-1= -1
• the number that gives us -1 is 1 (from the graph)

so x is 1

• 3x²-3x-1= x+1  ⇒3x²-4x-2 = 0
• Δ(the dicriminant)= (-4)²-4*3*(-2)= 16+24 =40
• two solution x and y
• x= (4-√40)/6 and y= (4+√40)/6
• x= -0.38 and y = 1.7
• so the estimations are -0.38 and 1.7