Question

plss answer maths second degree equation​

Answer 1

Answer:

12

Step-by-step explanation:

Let the number be x

according to the question

$x \times (x + 2) = 168 \\ \\ {x}^{2} + 2x - 168 = 0$

Splitting the middle term

${x}^{2} - 12x +14x - 168 = 0 \\ x(x - 12) + 14(x - 12) = 0 \\ \\ (x - 12)(x + 14) = 0$

equating factors with zero

$x - 12 = 0 \\ x = 12 \\ \\ x + 14 = 0 \\ x = - 14$

negative values are rejected

therefore,

x= 12