Expand and simplify : a) (x+7)(x+10). b) (x-3) (x-9)

Step-by-step explanation:

A) Using the foil method and distribution, you should get x²+10x+7x+70 from (X×X)+(X×10)+(X×7)+(7×10). When you combine these like terms, you get x²+17x+70.

B) Using the same ideology from part A, when you multiply x-3 into x-9. you should get x²-9x-3x+27. Simplifying this will give you x²-12x+27.

actually need the numericals but attached

Step-by-step explanation:

if we take it as 1 km then it would be

home to cafe = 1 km

cafe to school =

so it will be 1 + 1/2 that is

ok mark me as brainlist