Question

Solve the following quadratic equations by factorisation
${x}^{2} - 15x + 54 = 0$
plz fast​

Answer 1

Answer:

${x}^{2} - 15x + 54 = 0 \\ {x}^{2} - (6 + 9)x + 54 = 0 \\ {x}^{2} - 6x - 9x + 54 = 0 \\ {x}(x - 6) - 9(x - 6) = 0 \\ (x - 9)(x - 6) = 0 \\ x - 9 = 0 \\ x = 9 \\ x - 6 = 0 \\ x = 6$

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