1.

IF p+q=4 , p-q=2 find p^2+q^2Those who will answer it right will be marked as the brainliest​

Answer»

ANSWER:

p + q = 4 \\ p - q = 2 \\ {}^{ + } \: \: {}^{ - } \: \: \: \: \: \: {}^{ + } \\ = = = = = = \\2 p = 8 \\ p = 4 \\ \\ p - q = 2 \\ 4 - q = 2 \\ \\ 4 - 2 = q \\ \\ q = 2 \\ \\ \\ {p}^{2} + {q}^{2} = {4}^{2} + {2}^{2} = > 16 + 4 = 20

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