Question

EXERCISE 4.7 Find the product using lattice multiplication and check it by multiplying vertically. (a)47×48 (b)78×27 (c)72×34 (d)86×57 (e)79×29 (f)87×27
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Answer 1

${\huge\fbox\pink{A}\fbox\blue{N}\fbox\purple{S}\fbox\green{W}\fbox\red{E}\fbox\orange{R}\fbox{}\fbox\gray{}}$

Example 4: If α and β are the zeros of ax2 + bx + c, a ≠ 0 then verify the relation between the zeros and its coefficients. Sol. Since a and b are the zeros of polynomial ax2 + bx + c. Therefore, (x – α), (x – β) are the factors of the polynomial ax2 + bx + c.