Question

Write a quadratic function f whose only zero is 11

Answer 1

$\qquad\qquad\huge\underline{{\sf Answer}}$

Here's the solution ~

To write a quadrilatic function, we have to use its roots, like we have to subtract the roots from x and multiply them ~ then we will get our required function !

Since our only root is 11 here, we have to do t double

$\qquad \sf \dashrightarrow \:(x - 11)(x - 11)$

$\qquad \sf \dashrightarrow \: {x}^{2} - 11x - 11x + 121$

$\qquad \sf \dashrightarrow \: {x}^{2} - 22x + 121$

That's our required function ~ I hope you understood the whole thing !