Advertisements
Advertisements
Question
Expand.
(m − 4)(m + 6)
Advertisements
Solution 1
(m − 4)(m + 6)
= (m)2 + {(−4) + 6}m + (−4) × (6)
= m2 + (−4 + 6)m − 24
= m2 + 2m − 24
Solution 2
(m − 4)(m + 6)
= m(m + 6) − 4(m + 6)
= m2 + 6m − 4m − 24
= m2 + 2m − 24
RELATED QUESTIONS
Expand.
`(m + 2/3)(m − 7/3)`
Expand.
`(1/y + 4)(1/y - 9)`
Expand: (x + 2)(x + 3).
Expand: (2a + 3b)(2a - 3b).
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(x + 3)(x + 7)
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(4x + 3y)(4x + 5y)
Evaluate the following, using suitable identity
51 × 52
Using suitable identities, evaluate the following.
10.1 × 10.2
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 3x + 2
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 + 19x – 20
