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
Evaluate the following using identities:
(2x + y) (2x − y)
If \[x - \frac{1}{x} = 7\], find the value of \[x^3 - \frac{1}{x^3}\].
Find the following product:
\[\left( 3 + \frac{5}{x} \right) \left( 9 - \frac{15}{x} + \frac{25}{x^2} \right)\]
Find the following product:
If a − b = −8 and ab = −12, then a3 − b3 =
If \[\frac{a}{b} + \frac{b}{a} = 1\] then a3 + b3 =
Find the square of `(3a)/(2b) - (2b)/(3a)`.
Find the squares of the following:
3p - 4q2
If x + y + z = p and xy + yz + zx = q; find x2 + y2 + z2.
If `x + (1)/x = "p", x - (1)/x = "q"`; find the relation between p and q.
