Hey I'm in 6th too, Simplify means to solve the prob
The general form of such an equation is
x^2 + y^2 = r^2 where r = radius
In this case r^2 = 4^2 + 5^2 = 41
So the required equation is x^2 ^ y^2 = 41
B
4a + 3 = 11...subtract 3 from both sides
4a + 3 - 3 = 11 - 3...simplify
4a = 8 ....divide both sides by 4
(4/4)a = 8/4...simplify
1a, or just a = 2 <==
The correct answer is: [B]:
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<span> f(x) = (x - 9)(x + 9)(x + 5); x= 9, -9, -5 .
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