find-a-b-2-a-b-2-using-the-following-vectors-a-5i-6j-b-2i-7ja-228b-10i-12jc-128d

Question

Find ||a + b||² - ||a - b||²using the following vectors:

a = -5i + 6j, b = 2i + 7j

Accepted Answer

128

Answer

228

Answer

-10i + 12j

Answer

-128

Find ||a + b||2 - ||a - b||2 using the following vectors:a = -5i + 6j, b = 2i + 7j