4. Find the range of values of k for which (a) 2x2 + 2x + k is always positive (b) –3x2 + 6x + k-1 is always negative (c) 3x2 – 3x > x + k for all real values of x (d) kx^2 + 1 > 2kx -k for all real values of x. [(a) k> 1/2; (b) k < -2; (C)k<4/3 ; (d) k> 0]
(The answers are in the square brackets. Please refer to them and help me get the correct answer. Will give the most BRAINLIEST I can and I will mark the first correct answer as the best. Pls help❤️❤️)
