Question

please answer to all questions with explanation​

Answer 1

Answer:

1. x²+(5+2)x+(5×2)= x²+7x+10-----. (x+a)(x+b)=x²+(a+b)x+ab
2. (x-5)²=x²-10x+25-----(a-b)²= a²-2ab+b²
3. (3x)²-(2)²= 9x²-4
4. (x²)²-(1/x²)²= x⁴-1/x⁴
5. (1+x)²= 1²+2(1)(x)+x²= 1+2x+x²

Step-by-step explanation:

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