Question

a^6+3a^3b^3-40b^6 factorise​

Answer 1

Step-by-step explanation:

sin230+cos2305cos260+4sec230−tan245

⇒(21)2+(23)25(21)2+4(32)2−(1)2

⇒41+4345+316−1

⇒4445+316−1

⇒123