Question

Solve:           x2 + x + 42 = 0 ​

Answer 1

Answer:

Step-by-step explanation:

Can't be factorized. It is an irreducible polynomial

Answer 2

Answer:

${x }^{2} + x + 42 = 0 \\ {x}^{2} + 7x - 6x + 42 = 0 \\ x(x + 7) - 6(x + 7) = 0 \\ (x - 6)(x + 7) = 0 \\ x = 6 \\ x = - 7$