Evaluate x^2 - 3x; when x = 4

14

Step-by-step explanation:

To evaluate 2 + 3x for x = 4, substitute x = 4 into the expression.

x=4⇒2+3×4=2+12=14

c

step-by-step explanation:

at least i think its

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x