Attempt any four sub-questions from the following:
Prepare the cumulative frequency (less than types) tables from the following distribution table:

Question

Attempt any four sub-questions from the following:Form the quadratic equation if the roots are 6 and 7.

Philoid · Accepted Answer

Let α and β be the roots of the quadratic equation.

∴ α = 6 and β = 7

Quadratic Equation ⇒ x² – (α + β)x + αβ = 0

α + β = 6 + 7 = 13

αβ = 6 × 7 = 42

∴ required equation ⇒ x² – 13 × x + 42 = 0

∴ Required equation is x² – 13x + 42 = 0

Attempt any four sub-questions from the following:
Form the quadratic equation if the roots are 6 and 7.