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
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اس سوال کو وضاحت کے ساتھ پڑھیں
- (x + 2)(x + 1)
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اس سوال کو وضاحت کے ساتھ پڑھیں
