Question

Usong identity:(x+a)(x+b)=xsquare+(a+b)x+ab found the product of following binomials:
(a) (m^2-3)(m^2+5)
(b) (y-1/2)(y+3/2)

Answer 1

dttes267227-__&撴)2225790753211agteedhkvd

Answer 2

Using Identity (x+a)(x+b) = x² + (a+b).x +ab

Okay, (a) (m² - 3)(m² + 5)

= m⁴ + m²(5 - 3) - 3.5

= m⁴ + 2.m² -15

(b) (y - 0.5)(y + 1.5)

= y² + (1.5 - 0.5).y -0.5*1.5

= y² + y - 0.75