Advertisements
Advertisements
Question
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
33 x 27
Sum
Advertisements
Solution
33 x 27 = (30+3) (30−3)
= (30)2 − (3)2
= 900 − 9
= 891
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+b) (a−b) (a2+b2)
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
21 x 19
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
103 x 97
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
9.8 x 10.2
Evaluate : `(3"x"-1/(2"y"))(3"x"+1/(2"y"))`
Evaluate : (5x + 8y) (3x + 5y)
Evaluate : (7x + 15y) (5x − 4y)
Evaluate : (2a − 3b) (3a + 4b)
Evaluate : (9a − 7b) (3a − b)
Evaluate: (3a2 − 4b2) (8a2 − 3b2)
