3xy-4x + 15y-20 Sol: As there are no number are same. So -4x-3xy +15y-20 -------------------- -4x-3xy+15y-20
8x + 20 = 4 (2x + 5)
6y3 + 8y2 - 15y - 20 is an expression, not an equation (or inequality). An expression cannot be solved.The expression factorises to (3y + 4)*(2y2 - 5)
To factorise is to find the numbers that divide into the original number by only using prime numbers. For example factorise 20 = 2 times 2 times 5
x=20 y=-3
(x - 5)(x - 2)(x - 2)
Factorise 20. How long does it take?
Yes because you have a letter in there that represents a number.
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 400.
25
2+2+2+10+5+5+5+20+20+20+20+20+20=151
20 + + 20 + 20 = 60