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Grade 128 grade maths

Use a suitable identity to get each of the following products.
( 2a – 7 )(2a- 7)

Profile image of Pawan Prajapati
5 Years agoGrade 12
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1 Answer

Profile image of Harshit Singh
5 Years ago
Dear Student

( 2a – 7 )(2a- 7)=(2a- 7)^2
= 4a^2–28a + 49
Using (a-b)^2= a^2+ b^2- 2ab

Thanks