26.2x^(2)-7x-15=0

30x^(2)+7x-15

Write the sum and the product of the zeros of the polynomials a) x^(2)+5x+6 b) 2x^(2)-7x-15

15x^(2)-7x-36=0:

(i) Is x=5 a solution of the equation x^(2)-2x-15=0 ? (ii) Is x=-3 a solution of the equation 2x^(2)-7x+9=0 ?

Factorise (i) x^(2)+9x+18 (ii) 6x^(2)+7x-3 (iii) 2x^(2)-7x-15 (iv) 84-2r-2r^(2)

Factorise (i) x^(2)+9x+18 " " (ii) 6x^(2)+7x-3 (iii) 2x^(2)-7x-15 " " (iv) 84-2r-2r^(2)

Find the square root of (2x^(2)-7x-15)(2x^(2)-24x+70)(2x^(2)-11x-21) .

Find the square root of (2x^(2)-7x-15)(2x^(2)-24x+70)(2x^(2)-11x-21) .

Discuss the nature of the following quadratic equations without finding the roots i) x^(2)-12x+32=0 ii) 2x^(2)-7x+10=0 iii) 4x^(2)-20x+25=0 iv) 3x^(2)+7x+2=0

Discuss the nature of the following quadratic equations without finding the roots i) x^(2)-12x+32=0 ii) 2x^(2)-7x+10=0 iii) 4x^(2)-20x+25=0 iv) 3x^(2)+7x+2=0