Question

Which equation can be solved using the expression -3 plus or minus the square root of (3)squared +4(10)(2)/2(10) for x

Answer 1

According to E2020 the correct answer is B. 2 = 3x + 10x2

Answer 2

This is the concept of quadratic equations; We required to find the type of equation that can be solved using the model that has been used to solve the equation such that the answer is:
[-3+-sqrt(3^2+4(10)(2))]/(2(10))
The formual that was applied here was a quadratic formula given by:
x=[-b+\-sqrt(b^2-4ac)]/2a
whereby from the our substituted values above,
a=10,b=3 and c=-2
such that the quadratic equation will be:
10x^2+3x-2