If x^2 = k + 1, then x^4 - 1 / x^2 + 1 =

Step-by-step explanation:

Since (x² + 1)(x² - 1) = x⁴ - 1,

(x⁴ - 1)/(x² + 1) = x² - 1 = k.

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²