Which expressions are equivalent to 4x^4-9x^2?
(could be more than one answer.)
a. (2x^4-3x^2)(2x^4+3x^2)
b. 4x^2(x^2-5)
c. x^2(4x^2-9)
d. (2x^2-3x)(2x^2+3x)

halp plz

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place