Question

Factorise x2-15xy+26y2

Answer 1

$\huge\underline{\green{Answer}}$

${x}^{2} - 10xy + {25y}^{2} \\ = {x}^{2} - 2 \times x \times 5y + {(5y)}^{2} \\ = {x}^{2} + {5y}^{2} \\ = {(x + 5y)}^{2}$