Question

find the value of each of the following using the shortcut method A47 qb 25 cube 68 cube d 84 cube

Answer 1

using (50-3)^2 u easily found 2500+9-300=2209
fir 25 you easily go for 20+5)^2   as 400+25+200=625
for 68 use 70-2)^ as 4900+4-280=4624
similarly 84 as (80+4)^2 as 6400+16+640=7056

Answer 2

Answer:

Step-by-step using (50-3)^2 u easily found 2500+9-300=2209

fir 25 you easily go for 20+5)^2 as 400+25+200=625

for 68 use 70-2)^ as 4900+4-280=4624

similarly 84 as (80+4)^2 as 6400+16+640=7056