Algebra problem answers (50..59)

50.

Problem

If calculate

Solution




51.

Problem

If calculate aa.bb.cc

Solution




52.

Problem

    (a+1)(b+1)(c+1) = 3
    (a+2)(b+2)(c+2) = -2
    (a+3)(b+3)(c+3) = -1
calculate: (a+20)(b+20)(c+20)

Solution




so:



which makes equations:



53.

Problem

Calculate x if



Solution

factorize base numbers and combine:



division by 33x



let

so:



Factorization of this equation may be found by plotting.
See equation plotter Graphics Explorer

54.

Problem


if calculate

Solution




55.

Problem


solve x if

Solution




56.

Problem


calculate x2+y2 if

Solution




57.

Problem

0 < b < a
a2 + b2 = 6ab

calculate

Solution




58.

Problem


calculate x+y if given:



Solution

We use the rule: (x-1)(x+1) = x2 - 1.



59.

Problem


If
calculate

Solution