Question

please me to solve this maths problem
${198}^{3}$
solve this by formula ( a + b) cube

Answer 1

$<b>Heya mate. (^_-). Solution below.$
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$<u>Your Question -</u>$

solve (198)³ by using the formula of (a + b)³

$<u>Solution -</u>$

(198)³
= (190 + 8)³

Let 190 be 'a' and 8 be 'b'

Then, we know that

(a + b)³ = a³ + b³ + 3ab (a + b)

So, putting the values of a and b.

(190 + 8)³

= (190)³ + (8)³ + 3 × 190 + 8 {190 + 8}

= 68,59,000 + 512 + 4,560 {198}

= 68,59,000 + 512 + 902880

= 77,62,392. $\boxed{\mathcal{\bold{Answer !!}}}$

$<marquee>Hence, (198)³ = 77,62,392</marquee>$
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Thank you. ;-)