Q. Find two number that multiply to 140 and add to 6
Denote Numbers: Let's denote the two numbers as x and y. We are given two equations based on the problem statement:1. The product of the two numbers is 140: x×y=1402. The sum of the two numbers is 6: x+y=6We need to find the values of x and y that satisfy both equations.
Express y in terms of x: From the sum equation x+y=6, we can express y in terms of x: y=6−x.
Substitute into product equation: Substitute y=6−x into the product equation x⋅y=140 to get a quadratic equation in terms of x:x⋅(6−x)=140
Expand and rewrite quadratic form: Expand the left side of the equation and write it in standard quadratic form: x×6−x2=140−x2+6x=140
Set quadratic equation to zero: Move all terms to one side to set the quadratic equation to zero:−x2+6x−140=0
Use quadratic formula: Since the quadratic equation is not easily factorable, we can use the quadratic formula to find the values of x. The quadratic formula is x=2a−b±b2−4ac, where a=−1, b=6, and c=−140.
Calculate discriminant: Calculate the discriminant Δ=b2−4ac:Δ=62−4⋅(−1)⋅(−140)Δ=36−560Δ=−524Since the discriminant is negative, there are no real solutions to the equation. This means there is a math error in our previous steps or the problem statement might be incorrect as it is not possible for two real numbers to multiply to 140 and add to 6.