Advertisements
Advertisements
प्रश्न
Multiply:
[−3d + (−7f)] by (5d + f)
Advertisements
उत्तर
To multiply, we will use distributive law as follows:
\[\left[ - 3d + \left( - 7f \right) \right]\left( 5d + f \right)\]
\[ = \left( - 3d \right)\left( 5d + f \right) + \left( - 7f \right)\left( 5d + f \right)\]
\[ = \left( - 15 d^2 - 3df \right) + \left( - 35df - 7 f^2 \right)\]
\[ = - 15 d^2 - 3df - 35df - 7 f^2 \]
\[ = - 15 d^2 - 38df - 7 f^2 \]
Thus, the answer is \[- 15 d^2 - 38df - 7 f^2\].
संबंधित प्रश्न
Find each of the following product:
(7ab) × (−5ab2c) × (6abc2)
Express each of the following product as a monomials and verify the result in each case for x = 1:
(4x2) × (−3x) × \[\left( \frac{4}{5} x^3 \right)\]
Write down the product of −8x2y6 and −20xy. Verify the product for x = 2.5, y = 1.
Evaluate each of the following when x = 2, y = −1.
\[\left( \frac{3}{5} x^2 y \right) \times \left( - \frac{15}{4}x y^2 \right) \times \left( \frac{7}{9} x^2 y^2 \right)\]
Find the product 24x2 (1 − 2x) and evaluate its value for x = 3.
Simplify: a(b − c) + b(c − a) + c(a − b)
Multiply: \[\left( - \frac{a}{7} + \frac{a^2}{9} \right)by\left( \frac{b}{2} - \frac{b^2}{3} \right)\].
Simplify:
(5 − x)(6 − 5x)( 2 − x)
Show that: (4pq + 3q)2 − (4pq − 3q)2 = 48pq2
Multiply:
(4x + 5y) × (9x + 7y)
