Answer:
X^2-2X+1=0
Step-by-step explanation:
given,2X-X^2=1
or,-(X^2-2X)=1
or,X^2-2X=-1
or,X^2-2X+1=0 ,which is the req.equation in standard form.
Answer:
its 159
Step-by-step explanation:
Don't get confused with the second pair of brackets - you must apply the negative sign on the outside to all the signs on the inside, which now gives:
Now just take away the brackets and collect like terms to get:
15x + 20
You have to distribute the 5x to the 3 and the 4, so 5x multiplied by 3 is 15x and 5 multiplied by 4 is 20.