Question

plese solve this question i will give mark as brialalnt​

Answer 1

Answer:

-a² + 3a is your answer

Step-by-step explanation:

OPTION 3 IS CORRECT ANSWER

 a² + 3a + 7 ....i

-(-a² + 3a)....ii

this ii became

+a² - 3a

subtract this from  a² + 3a + 7

  a² + 3a + 7

+ a² - 3a

= 2a² + 7

Answer 2

Answer:

3) -a² + 3a

Step-by-step explanation:

Let the polynomial be x

(a² + 3a + 7 ) - x = 2a² + 7

∴x = - a² + 3a ( ∵ taking x on Right side & 2a² + 7 on left side)

Hence the required polynomial is  -a² + 3a