Question

7a^2 - 5ab + 9b^2 , -2a^2 - 2ab + 11b^2 , - 3a^2 + 10ab - 8b^2


please anybody solve it step by step ​

Answer 1

Answer:

7a - 5 + 9b, -4a^3 + 11b, -3a + 10 - 8b

Step-by-step explanation:

(i)7a^2 - 5ab + 9b^2 (We could cut the 7a^2's A^2 with the A of 5ab and cut the b of 9b^2 with the b of -5ab, this will cut a^2 to a^1 and b^2 to b^1 and 5ab's  ab will be cut down and only -5 will remain and thus the answer will be 7a - 5 + 9b)

(i)-2a^2 - 2ab + 11b^2 (-2a^b's a and b and 2 will be added by 2ab which is in subtraction sign. Then it will become -4a^3b^1 + 11b^2. -4a^2b^1's b will be cut down by 11b^2 and -4a^3b^1 will become -4a^3 and 11b^2 will become 11b and thus answer will be -4a^3 + 11b^2)

(i)-3a^2 + 10ab - 8b^2 (We could cut the -4a^2's A^2 with the A of +10ab and cut the b of -8b^2 with the b of -2ab, this will cut a^2 to a^1 and b^2 to b^1 and 10ab's  ab will be cut down and only 10 will remain and thus the answer will be -3a + 10 - 8b)