Question

Factorise: 7x square+2 root14x +2

Answer 1

7x²+2r(14)x+2 = 0
(r(7)×x)²+2×r(7)×x×r(2)+(r(2))² = 0
(x×r(7)+r(2))² = 0
x = –r(2)/r(7) = –r(2/7)