Question

Easy math asap please

Answer 1

Answer:

$81{x}^{2} + 18x \sqrt{2} + 2$

Step-by-step explanation:

$(9x + \sqrt{2} )(9x + \sqrt{2} ) \\ = {(9x)}^{2} + ( \sqrt{2} + \sqrt{2} ) \times 9x + \sqrt{2} \times \sqrt{2} \\ = 81 {x}^{2} + 2 \sqrt{2} \times 9x + 2 \\ = 81{x}^{2} + 18x \sqrt{2} + 2$