a 168-inch board is cut into two pieces. one piece is two times the length of the other. find the length of the two pieces.

112 in, 56 in

Step-by-step explanation:

2x+x = 168in

3x=168in

X= 56in

Therefore

The board twice the size is 112in

The smaller board is 56in

This combines to the full 168in

(7x - 11) and (7x + 11) are both factors

Step-by-step explanation:

Given

49x² - 121 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , thus

49x² - 121

= (7x)² - 11²

= (7x - 11)(7x + 11) ← in factored form