(x - 6)(x - 6) = ?A. (x2 - 36)B. (x2 + 36)C. (x2 - 6x + 36)D. (x2 - 12

1.	(x - 6)(x - 6) = ?A. (x2 - 36)B. (x2 + 36)C. (x2 - 6x + 36)D. (x2 - 12x + 36)
Answer» (x - 6)(x - 6)By component wise multiplication = x(x - 6) - 6(x - 6) (from above we can see that, x.x = x², x.(-6) = - 6x, -6.x = - 6x, and -6.-6 = +36) = x² - 6x - 6x + 36 = x² - 12x + 36 Note: Multiplication of signs is given by- (+) × (+) = + (+) × (-) = - (-)×(+)= - (-) × (-) = +

(x - 6)(x - 6) = ?A. (x2 - 36)B. (x2 + 36)C. (x2 - 6x + 36)D. (x2 - 12x + 36)

Answer»

(x - 6)(x - 6)By component wise multiplication

= x(x - 6) - 6(x - 6)

(from above we can see that, x.x = x², x.(-6)

= - 6x, -6.x = - 6x, and -6.-6 = +36)

= x² - 6x - 6x + 36

= x² - 12x + 36

Note: Multiplication of signs is given by-

(+) × (+) = +

(+) × (-) = -

(-)×(+)= -

(-) × (-) = +