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5[a 2 -3{b 2 -a 2 -2ab}] a 2 -2ab is vinculum Please help, I need to solve this before 11

5[a2-3{b2-a2-2ab}]
a2-2ab is vinculum
Please help, I need to  solve this before 11

Grade:8

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

5[ a^2 -3b^2 + 3a^2 + 6ab ]

= 5[ 4a^2 – 3b^2 _+ 6ab ]

= 20a^2 -15b^2 + 30ab

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