Question

Evaluate using suitable identity: 505x503

Answer 1

Answer:

(x+a)(x+b) =

${x}^{2} + (a + b)x + (ab)$

(500+3) (500+5) =

${500}^{2} + (3 + 5)500 + 15$

= 254015

Step-by-step explanation:

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