Question

please answer .........q.no 1 and 2..

Answer 1

$1.) \: \: (2x + 3y )^{2}$
★ using the formula:

$(a + b)^{2} = {a}^{2} + {b }^{2} + 2ab$
we have.......

$(2x + 3y)^{2} = \\ \\ {(2x)}^{2} + {(3y)}^{2} + 2 \times 2x \times 3y \\ \\ = 4 {x}^{2} + 9 {y}^{2} + 12xy$
2.) (1092)² = (1000+92)²

again using the same formula used above we have,

• (1000+92)² = 1000²+92²+2x1000x92

= 1000000+8464+184000

= 1184000+8464

=1192464


_______________________________________________