Substituting into expressions

Work out the value the expression when

a = -2, b = 3, c = -4 and d = 6.

a + 2c

Work out the value the expression when

a = -2, b = 3, c = -4 and d = 6.

bd - 10

Work out the value the expression when

a = -2, b = 3, c = -4 and d = 6.

20 + b³

Work out the value the expression when

a = -2, b = 3, c = -4 and d = 6.

(bc)/a + d

Work out the value the expression when

w = 5, x = 2, y = -8 and z = -1.

x(2w - y)

Work out the value the expression when

w = 5, x = 2, y = -8 and z = -1.

(2x)³

Work out the value the expression when

w = 5, x = 2, y = -8 and z = -1.

w + z(2x - y)

Work out the value the expression when

w = 5, x = 2, y = -8 and z = -1.

2 (x³ - z²)

Work out the value the expression when

p = 2, q = -3, r = 4 and s = -5.

3s - 6q

Work out the value the expression when

p = 2, q = -3, r = 4 and s = -5.

pq + rs