Question

x 2+ 4x = 5 solve this quadratic equation using formula​

Answer 1

Answer:

given equation :

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${x}^{2} + 4x = 5$

${x}^{2} + 4x - 5 = 0$

Solution :

${x}^{2} + 4x - 5 = 0 \\ \\ {x}^{2} + (5 - 1)x - 5 = 0 \\ \\ {x}^{2} + 5x - x - 5 = 0 \\ \\ x(x + 5) - 1(x + 5) = 0 \\ \\ (x + 5)(x - 1) = 0 \\ \\ x + 5 = 0 \\ \\ x = - 5 \\ \\ \\ \\ x - 1 = 0 \\ \\ x - 1$

therefore answer = x = -5 & x = 1

hope it helps you ✌️✌️