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(D) To evaluate $84 	imes 79$ without direct multiplication,we can express the numbers as binomials.We can write $84$ as $(80 + 4)$ and $79$ as $(80

Vedclass · Accepted Answer

$6636$

Vedclass · Answer

(D) To evaluate $84 	imes 79$ without direct multiplication,we can express the numbers as binomials.We can write $84$ as $(80 + 4)$ and $79$ as $(80 - 1)$.Using the algebraic identity $(x + a)(x + b) = x^2 + (a + b)x + ab$,where $x = 80$,$a = 4$,and $b = -1$:$(80 + 4)(80 - 1) = 80^2 + (4 - 1)80 + (4 	imes -1)$$= 6400 + (3 	imes 80) - 4$$= 6400 + 240 - 4$$= 6640 - 4$$= 6636$.

Evaluate the following product without multiplying directly: $84 \times 79$

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