Question

Si a+b = 10; ab= 3 calcula a2 + b2

Answer 1

Solution:

• Given, a + b = 10, ab = 3
• Therefore,
• (a + b)^2 = a^2 + 2ab + b^2
• or, (10)^2 = a^2 + 2(3) + b^2
• or, 100 = a^2 + 6 + b^2
• or, a^2 + b^2 = 100 - 6
• or, a^2 + b^2 = 94

Answer:

94