Please answer the question below in the image

Asked by Girishdhawan | 15th Jun, 2018, 09:38: PM

Expert Answer:

4x2 - 4√7 x + 7 = 4x2 - 2√7 x - 2√7 x + 7 
                      = 2x (2x - √7) - √7 (2x - √7)
                      = (2x - √7) (2x - √7)

Answered by Sneha shidid | 18th Jun, 2018, 09:10: AM