Enter the coefficients for the Ax² + Bx + C = 0

A
B
C

If A=0, the equation is not quadratic.

Roots:
'; $discriminantFormula = '=POWER(' . $_POST['B'] . ',2) - (4 * ' . $_POST['A'] . ' * ' . $_POST['C'] . ')'; $discriminant = PhpSpreadsheet_Calculation::getInstance()->calculateFormula($discriminantFormula); $r1Formula = '=IMDIV(IMSUM(-' . $_POST['B'] . ',IMSQRT(' . $discriminant . ')),2 * ' . $_POST['A'] . ')'; $r2Formula = '=IF(' . $discriminant . '=0,"Only one root",IMDIV(IMSUB(-' . $_POST['B'] . ',IMSQRT(' . $discriminant . ')),2 * ' . $_POST['A'] . '))'; echo PhpSpreadsheet_Calculation::getInstance()->calculateFormula($r1Formula) . '
'; echo PhpSpreadsheet_Calculation::getInstance()->calculateFormula($r2Formula) . '
'; $callEndTime = microtime(true); $helper->logEndingNotes(); } }