Question

Use a suitable identity and evaluate:

a) (x + 8) (x − 2)​

Answer 1

Answer:

Multiply

x

by

x

.

x

2

+

x

⋅

−

2

−

8

x

−

8

⋅

−

2

Move

−

2

to the left of

x

.

x

2

−

2

⋅

x

−

8

x

−

8

⋅

−

2

Multiply

−

8

by

−

2

.

x

2

−

2

x

−

8

x

+

16

Subtract

8

x

from

−

2

x

.

x

2

−

10

x

+

16