" (i) "x^(2)-18x+72=0

Let two numbers have arithmatic mean 9and geometric mean 4 .Then these numbers are roots of the equation (a) x^(2)+18x+16=0 (b) x^(2)-18x-16=0 (c) x^(2)+18x-16=0( d) x^(2)-18x+16=0

Find the roots of the following quadratic equations (if they exist) by the method of comleting the square: (1) 2x^(2)+x-4=0 " "(2) 6x^(2)+18x+10=0 (3) x^(2)+5x+7=0" "(4)x^(2)+3sqrt(3)x-12=0

Solve each of the following equations by using the formula : (i) 5x^(2)-2x-3=0 (ii) x^(2)=18x-77

2x^(2) - 9x+10 = 0 y^(2) - 18y+72 = 0

If the inequation sqrt( x^2 - 18 x+ 72 ) lt x -1 then

Let two numbers have arithmatic mean 9 and geometric mean 4.Then these numbers are roots of the equation (a) x^2+18x+16=0 (b) x^2-18x-16=0 (c) x^2+18x-16=0 (d) x^2-18x+16=0

solve the equation x^(2) - 18x + 45 = 0

Let two numbers have arithmetic mean 9 and geometric mean 4. Then these numbers are theroots o the equation (A) x^2+18x+16=0 (B) x^2-18x+16=0 (C) x^2+18x-16=0 (D) x^2-18x-16=0

Find the nature of the roots of the equations of given below : (a) x^(2) - 13x + 11 =0 (b ) 18x^(2) - 14x + 17 = 0 (c ) 9x^(2) - 36x + 36 = 0 (d) 3x^(2) - 5x - 8 = 0

If p and q are the roots of the equation 3x^2+6x+2=0 , show that the equation whose roots are (-p^2/q) and (-q^2/p) is 3x^2-18x+2=0 .