`x-4=21`

The locus of the centre of all circles passing through (2, 4) and cutting x^2 + y^2 = 1 orthogonally is : (A) 4x+8y = 11 (B) 4x+8y=21 (C) 8x+4y=21 (D) 4x-8y=21

The locus of the centre of all circles passing through (2, 4) and cutting x^2 + y^2 = 1 orthogonally is : (A) 4x+8y = 11 (B) 4x+8y=21 (C) 8x+4y=21 (D) 4x-8y=21

Factorize each of the following expressions: x^2+4x-21

Factorize each of the following expressions: x^(2)+4x-21

(x^2-4x-21)=?

x ^(2) + 4x - 21 =?

Factorize x^2-4x-21 .

Divide x^(2)-4x-21 by x-7