This video demonstrates a mental math technique for quickly squaring numbers close to 100, such as 99 × 99 and 98 × 98, by using a step-by-step method that simplifies complex multiplication into manageable calculations.
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Can you expand a squared bracket correctly?Added:
I don't think any child can solve this.
99 * 99 Any takers?
That's easy. Step aside, everyone. I'll show you how it's done.
Now try this one. 98 * 98 = what?
Comment your answer.
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