Advertisements
Advertisements
प्रश्न
Use the direct method to evaluate the following products:
(5a + 16) (3a – 7)
Advertisements
उत्तर
(5a + 16) (3a – 7)
= (5a × 3a) + (5a × −7) + (16 × 3a) + 16 × (−7)
= (15a2) + (−35a) + 48a + (−112)
= 15a2 − 35a + 48a − 112
= 15a2 + 13a − 112
APPEARS IN
संबंधित प्रश्न
Factorise the following:
`27p^3-1/216-9/2p^2+1/4p`
What are the possible expressions for the dimensions of the cuboids whose volume is given below?
| Volume : 3x2 – 12x |
What are the possible expressions for the dimensions of the cuboids whose volume is given below?
| Volume : 12ky2 + 8ky – 20k |
If x = 3 and y = − 1, find the values of the following using in identify:
\[\left( \frac{x}{y} - \frac{y}{3} \right) \frac{x^2}{16} + \frac{xy}{12} + \frac{y^2}{9}\]
If \[x + \frac{1}{x}\] 4, then \[x^4 + \frac{1}{x^4} =\]
If a + b = 7 and ab = 10; find a - b.
If a - b = 7 and ab = 18; find a + b.
If `x + (1)/x = 3`; find `x^2 + (1)/x^2`
Simplify:
(7a +5b)2 - (7a - 5b)2
If `49x^2 - b = (7x + 1/2)(7x - 1/2)`, then the value of b is ______.
