Find the product 2x h2Solution2x h2 2x h2x h 2x2x 2xh

Solution

(2x + h)² = (2x +h)(2x +h)

==> 2x(2x) + 2x(h) + h(2x) + h(h)

==> 4x² + 2xh + 2xh + h²      since a^m aⁿ = a^m+n

==> 4x² + 4xh + h²      

method 2 : expansion formula (a + b)² = a² + 2ab + b²

==> (2x + h)² = (2x)² + 2(2x)(h) + (h)²

==> (2x + h)² = 4x² + 4xh + h²