Question

Find the values using expansion formula:

(i) 19² (ii) 38²​

Answer 1

Step-by-step explanation:

(10+9)square

(10)square+2(10)(9)+(9)square

100+180+81

361

(30+8)square

(30)square+2(30)(8)+(8)square

900+480+64

1444

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