If x - 4 = 9, what is the value of x^2 - 4?
- 77
- 165
- 81
- 21
Explanation
x - 4 = 9
Add 4 to both sides:
x = 13
Now, let's calculate x^2 - 4:
x^2 - 4 = (13)^2 - 4
= 169 - 4
= 165
So, the correct answer is: 165
Related MCQs
- 8
- 9
- 10
- 11
اس سوال کو وضاحت کے ساتھ پڑھیں
