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प्रश्न
Multiply:
[−3d + (−7f)] by (5d + f)
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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
Express each of the following product as a monomials and verify the result in each case for x = 1:
(3x) × (4x) × (−5x)
xy(x3 − y3)
Find the following product:
0.1y(0.1x5 + 0.1y)
Find the product 24x2 (1 − 2x) and evaluate its value for x = 3.
Multiply:
(2x + 8) by (x − 3)
Multiply:
(x2 + y2) by (3a + 2b)
Simplify:
a2b2(a + 2b)(3a + b)
Simplify : (x − y)(x + y) (x2 + y2)(x4 + y2)
Multiply:
16xy × 18xy
Solve:
(3x + 2y)(7x − 8y)
