Question

factorise n²-82² + x2 + 42​

Answer 1

Step-by-step explanation:

${x }^{2} - 8 {2}^{2} + x2 + 42 \\ {x}^{2} - 32 + x2 + 42 \\ {x}^{2} + 2x - 10 \\ {x}^{2} + (5 - 2)x - 10 \\ {x}^{2} + 5x - 2x - 10 \\ x(x + 5) - 2(x + 5) \\ (x + 5)(x - 2)$