Subtract 14 x^2 from the sum of 2x^2 -3 +11 and 7x^2 -3x -4

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Find two consexutive odd integers such that the sum of their square is 650