Advertisements
Advertisements
Question
Use the direct method to evaluate the following products :
(b – 3) (b – 5)
Sum
Solution
(b – 3) (b – 5) = (b × b) + (b × −5) + (−3) × b + (−3) (−5)
= b2 − 5b − 3b + 15
= b2 − 8b + 15
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Use suitable identity to find the following product:
(3x + 4) (3x – 5)
Write the following cube in expanded form:
(2x + 1)3
Write the following cube in expanded form:
`[3/2x+1]^3`
Evaluate the following using suitable identity:
(998)3
Factorise the following:
8a3 + b3 + 12a2b + 6ab2
Evaluate the following using identities:
`(a^2b - b^2a)^2`
Write the expanded form:
`(-3x + y + z)^2`
Find the value of 27x3 + 8y3, if 3x + 2y = 20 and xy = \[\frac{14}{9}\]
Use the direct method to evaluate the following products :
(5a + 16) (3a – 7)
Use the direct method to evaluate :
`(3/5"a"+1/2)(3/5"a"-1/2)`
