How do you multiply (b + 14) ^ { 2} ?

2 Answers
Jun 7, 2017

b^2 + 28 b + 196

Explanation:

(b + 14)^2 = (b + 14)(b + 14)

= (b * b) + (b * 14) + (14 * b) + (14 * 14)

= b^2 + 14 b + 14 b + 196

= b^2 + 28 b + 196

Jun 7, 2017

b^2+28b+196

Explanation:

"express " (b+14)^2=(b+14)(b+14)

"each term in the second bracket is multiplied by each "
"term in the first bracket as shown below"

(color(red)(b+14))(b+14)

=color(red)(b)(b+14)color(red)(+14)(b+14)

=(color(red)(b)xxb)+(color(red)(b)xx14))+(color(red)(14)xxb)+(color(red)(14)xx14)

=b^2+14b+14b+196

=b^2+28b+196