f(x)=3xsquared-4 and g(x)=xsquared-4 find (f+g)(2k)
N needhelpbad New member Joined Oct 21, 2005 Messages 1 Oct 21, 2005 #1 f(x)=3xsquared-4 and g(x)=xsquared-4 find (f+g)(2k)
U Unco Senior Member Joined Jul 21, 2005 Messages 1,134 Oct 21, 2005 #2 f(x) = 3x<sup>2</sup> -4; g(x) = x<sup>2</sup> - 4 It may be easier for you to see if we let h(x) = f(x) + g(x) So h(x) = (3x<sup>2</sup> - 4) + (x<sup>2</sup> - 4) = 4x<sup>2</sup> - 8 (f+g)(2k) becomes h(2k), which is...?
f(x) = 3x<sup>2</sup> -4; g(x) = x<sup>2</sup> - 4 It may be easier for you to see if we let h(x) = f(x) + g(x) So h(x) = (3x<sup>2</sup> - 4) + (x<sup>2</sup> - 4) = 4x<sup>2</sup> - 8 (f+g)(2k) becomes h(2k), which is...?
