Variation equation

Solve the equation:

V (2, x + 2) = 90

Final Answer:

x =  8

Step-by-step explanation:

V(2, x+2)=90 (x+2)⋅ (x+1)=90  (x+2)⋅ (x+1)=90 x2+3x−88=0  a=1;b=3;c=−88 D=b2−4ac=32−4⋅1⋅(−88)=361 D>0  x1,2​=2a−b±D​​=2−3±361​​ x1,2​=2−3±19​ x1,2​=−1.5±9.5 x1​=8 x2​=−11 x>0 x=x1​=8

Our quadratic equation calculator calculates it.


Try another example


Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
See also our variations calculator.
Do you have a linear equation or system of equations and are looking for a solution? Or do you have a quadratic equation?
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

combinatoricsalgebraGrade of the word problem

Related math problems and questions: