Question

x²-23x+42 maths question​

Answer 1

${x}^{2} - 23x + 42 \\ {x}^{2} - (21 + 2)x + 42 \\ {x}^{2} - 21x - 2x + 42 \\ x(x - 21) -2( x - 21) \\ (x - 2)(x - 21)$

x=2,21..

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