Write bi-quadratic polynomial x4−16x3+86x2−176x+105 as a product of two quadratic polynomial If one quadratic polynomial has roots 1 and 7.
Add the following rational numbers: (i) 34 and −35 (ii) 58 and −712 (iii) −89 and 116 (iv) −516 and 724 (v) 7−18 and 827 (vi) 1−12 and 2−15 (vii) −1 and 34 (viii) 2 and −54 (ix) 0 and −25