Grade 128 grade maths
Using a^2 – b^2 = (a + b) (a – b), find12.1^2– 7.9^2
Using a^2 – b^2 = (a + b) (a – b), find
12.1^2– 7.9^2
1 Answer
Harshit Singh
Dear Student
12.1^2–7.9^2
= (12.1 + 7.9)(12.1 - 7.9)
= 20 x 4.2
= 84
Thanks
12.1^2–7.9^2
= (12.1 + 7.9)(12.1 - 7.9)
= 20 x 4.2
= 84
Thanks
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