Question

The expression n2 + n represents the total number of blocks used in the nth figure of a pattern.

Figure 1 has 2 units. FIgure 2 has 6 units. Figure 3 has 12 units.

Use the equation n2 + n = 56 to determine which figure has 56 blocks.



Figure
has 56 blocks

Answer 1

Answer: 7 - solve this by inputting integers for n until the equation is true. 7 makes this equation true.