3(a+2)+b(a+2)=(a+2)(3+b); 4f(5m-3n)-5k(5m-3n)=(5m-3n)(4f-5k); 5m(a-3b)+(a-3b)=(a-3b)(5m+1); 5m(a-3b)-a+3b=5m(a-3b)-(a-3b)=(a-3b)(5m-1).
<span>(4x-5)(x+3)=(2x-3)^2
4x^2+12x-5x-15=4x^2-12x+9
4x^2-5x-4x^2+12x+12x=9+15
19x=24
x=24/19</span>
1 + 2X - 2Y = 3X - 4Y
3X - 2X = 1 - 2Y + 4Y
X = 2Y + 1
-----------------------
10 - 4X - 4Y = 3Y - 3X
4X - 3X = 10 - 4Y - 3Y
X = - 7Y + 10
------------------------
2Y + 1 = - 7Y + 10
2Y + 7Y = 10 - 1
9Y = 9
Y = 1
--------------
X = 2 + 1 = 3
1.√8*√5*√10=√8*√5*√5*√2=√16*√25=4*5=20
2.√3*√8√6=√3*√8*√2*3=√9*√16=3*4=12
3.√8*√6*√3-7=√16*√9-7=12-7=5
4.√27*√6*√2-8=√81√4-8=9*4-8=36-8=28