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2 years ago

(c) If 2a + 7b = 11 and ab = 2, find the value of 4a2 + 49b2.

Mathematics

2 answers:

Mademuasel [1]2 years ago

5 0

I hope this helps you

take both of sides paranthesis square

(2a+7b)^2=(11)^2

4a^2+2.4a.7b+49b^2=121

4a^2+49b^2+56.2=121

4a^2+49b^2=9

kirill115 [55]2 years ago

3 0

Answer:

Step-by-step explanation:

Please see the attached picture for full solution.

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(c) If 2a + 7b = 11 and ab = 2, find the value of 4a2 + 49b2.​

(c) If 2a + 7b = 11 and ab = 2, find the value of 4a2 + 49b2.