 NY Regents Exam   Teasers   IQ Tests   Chemistry   Biology   GK   C++   Recipes   Search <  a href="/cgi/members/home.cgi" class="toplink">Members   Sign off ## Algebra Homework Help : Substitution in Algebraic Expressions

Evaluate or simplify each of the following algebraic expressions after making appropriate substitutions.
Type the simplified final expression in the input box. Leave no spaces when typing the answer.
Since there are multiple ways of writing an answer, it is possible the computer may mark a correct answer wrong.
So, please always check the answer and explanation.

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1.

Given c = 2ab, simplify 4b - (7ab - (a3b2 + ac2) - 2b - c)

Hint

2.

Given a = -0.5, b = -2, simplify (1 + ab)2 + (1 + b2)c

Hint

3.

Given p = -2q, simplify (p3qr) (-pqr2)

Hint

4.

Given b = -2a, simplify a3 + 2a2b - 5ab2 + b3 + c3

Hint

5.

Given x = -2, simplify 5x3 + 12y + 23

Hint

6.

Given x > 0, y = x and z = 2x, simplify (3z2 - 2y3 + 2y2) / x2
 3z2 - 2y3 + 2y2 x2

Hint

7.

Given a = -3b, b > 0 and c = 2b, simplify (3b - 4a) / (3c + 4b)
 3b - 4a 3c + 4b

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