Algebraic expressions

Question 1 of 10

If x = 3, find the value of x² + 1.

Question 2 of 10

Simplify 2(x + 3) + 2(x + 6). Write the answer in the form ax + b. Give b only: b = ___

Question 3 of 10

4(p − 2) = 4p − 8.

Question 4 of 10

Simplify 2(x + 1) + 4(x + 2). Write the answer in the form ax + b. Give b only: b = ___

Question 5 of 10

If x = −3, find the value of 2x + 1.

Question 6 of 10

3x + 2x = 5x.

Question 7 of 10

If y = 3, then 2y² = 36.

Question 8 of 10

If x = −1, find the value of x² + 6.

Question 9 of 10

The length of a rectangle is (x + 8) cm and its width is (x + 5) cm. (a) Write an expression for its perimeter in simplest form. (b) Find the perimeter when x = 4. (c) Write an expression for its area when x = 4.

Question 10 of 10

The length of a rectangle is (x + 5) cm and its width is (x + 5) cm. (a) Write an expression for its perimeter in simplest form. (b) Find the perimeter when x = 4. (c) Write an expression for its area when x = 4.