Advertisements
Advertisements
Question
Multiply: −8x and 4 − 2x − x2
Solution
−8x (4 − 2x − x2)
= −8x × 4 −8x × −2x −8x × −x2
= −32x + 16x2 + 8x3
APPEARS IN
RELATED QUESTIONS
Find the areas of rectangles with the following pairs of monomials as their lengths and breadths, respectively.
(p, q); (10m, 5n); (20x2, 5y2); (4x, 3x2); (3mn, 4np)
Obtain the volume of a rectangular box with the following length, breadth, and height, respectively.
5a, 3a2, 7a4
Express each of the following product as a monomials and verify the result for x = 1, y = 2: \[\left( \frac{1}{8} x^2 y^4 \right) \times \left( \frac{1}{4} x^4 y^2 \right) \times \left( xy \right) \times 5\]
Express each of the following product as a monomials and verify the result for x = 1, y = 2: \[\left( - \frac{4}{7} a^2 b \right) \times \left( - \frac{2}{3} b^2 c \right) \times \left( - \frac{7}{6} c^2 a \right)\]
Multiply: abx, −3a2x and 7b2x3
Multiply (4x2 + 9) and (3x – 2)
Volume of a rectangular box (cuboid) with length = 2ab, breadth = 3ac and height = 2ac is ______.
Multiply the following:
–7pq2r3, –13p3q2r
Multiply the following:
15xy2, 17yz2
Multiply the following:
–3x2y, (5y – xy)
