Advertisements
Advertisements
Question
Evaluate : (2a − 3b) (3a + 4b)
Sum
Advertisements
Solution
(2a − 3b) (3a + 4b)
= 2a (3a + 4b) − 3b (3a + 4b)
= 6a2 + 8ab − 9ab − 12b2
= 6a2 − ab − 12b2
shaalaa.com
Product of Sum and Difference of Two Terms
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Evaluate : (a+1) (a-1) (a2+1)
Evaluate : (2a−b) (2a+b) (4a2+b2)
Evaluate : (3−2x) (3+2x) (9+4x2)
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
21 x 19
Evaluate: (6 – xy) (6 + xy)
Evaluate : `(3"x"-1/(2"y"))(3"x"+1/(2"y"))`
Evaluate : (7x + 15y) (5x − 4y)
Evaluate : (9a − 7b) (3a − b)
Evaluate: (a2 + 5) (a2 − 3)
Evaluate: (4x2 − 5y2) (4x2 + 5y2)
