Question Solve the quadratic equation Solve using square roots Solve using the quadratic formula Solve using the PQ formula r=0 Evaluate 5r2−26r2×4=0Simplify More Steps Evaluate 5r2−26r2×4Multiply the terms 5r2−104r2Collect like terms by calculating the sum or difference of their coefficients (5−104)r2Subtract the numbers −99r2 −99r2=0Solution r=0 Show Solution Rewrite the equation x2+y2=0 Evaluate 5r2−26r2×4=0Evaluate More Steps Evaluate 5r2−26r2×4Multiply the terms 5r2−104r2Collect like terms by calculating the sum or difference of their coefficients (5−104)r2Subtract the numbers −99r2 −99r2=0To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2 −99(x2+y2)=0Calculate −99x2−99y2=0Solution x2+y2=0 Show Solution Graph