Chapter 7 Algebra

Question 1

Make m the subject of the formula

c = 2m2 + 3

Answer 1

Subtract 3 form both sides.

c - 3 = 2m2

Divide both sides by 2.

c - 3 / 2 = m2

Square root both sides.

root c - 3 / 2 = m.

Question 2

How do you add or subtract algebraic fractions?

Answer 2

e.g. a / b + c / d

= ad + bc / bd

(same for subtracting).