Help Urgent Why is the middle term 2ab in (a + b)^2 and −2ab in (a − b)^2 when
written in standard form?

Given: f(x) = 2x + 5 and g(x) = x2 and h(x) = -2x h(g(f( = x2+ vx+ x + y

Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. the heights of the girls in an advanced swimming course are 55, 60, 59, 52, 65, 66, 62, and 65 inches. match the measures of this data with their values.

Measures of the angle of r, 31 s (x+4) t (3x+9)