A student solves the following equation and determines that the solution is −2. Is the student correct? Explain. 3
a + 2
−
6a
a2 − 4
=
1
a − 2

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction