Question

(vii) (6x - 7) (6x + 7)


Answer

6x (6x+7) -7 (6x+7)
36x² + 42x - 42x - 49
36x² - 49​

Answer 1

Answer:

6x (6x+7) -7 (6x+7)

36x² + 42x - 42x - 49

36x² - 49

Step-by-step explanation:

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Answer 2

Answer:

Here we will use the simple indices formula (a+b) (a-b) =a square - b square

Therefore (6x) square - 7 square = 36xsquare - 49

In another way