Question

please answer 1 and 3 and give explanation please ​

Answer 1

Answer:

1) (x - a)(x - b) = x² -bx -ax + ab. (on multiplying)

= x² -x(b+a) + ab

3) 37²-27² = (37+27) × (37 - 27)

{using identity a² - b² = (a+b)×(a-b)}

Step-by-step explanation:

hope it helps

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Answer 2

Answer:

1. (x-a) (x-b) = x²-(a+b)x+ab

3. 37² - 27² = (37+27) (37-27) = (64) (10) = 640