Question

Factorise
x2 + 6x + 9​

Answer 1

Solution:

$x²+6x+9$

Product = 9 (3 × 3 = 9)

Sum = 6 (3 + 3 = 6)

$⟹x²+(3+3)x+9$

$⟹x²+3x+3x+9$

$⟹x(x+3)+3(x+3)$

$⟹(x+3)(x+3)$