helppp8 helppp8

07-06-2016
Mathematics

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3a^2+4b^2 for a=2 and b=3

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Karima6 Karima6

07-06-2016

First write the question:
3a^2 + 4b^2

Substitute:
3 x (2^2) + 4 x (3^2)

Simplify:
(3 x 4) + (4 x 9)

Simplify again:
12 + 36

Answer:
48

Hope it helped :)

Answer Link

07-06-2016

3a^2+4b^2

3(2)^2+4(3)^2

3(4) + 4 (9)

12+36 = 48

Answer Link

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