I really need some help with these questions...
4. x+1-2(square root of x+4=0)
Stacey Warren - Expert brainly.com
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For #1: FOIL the right-hand side and combine like terms. Then you will see the rest as to what you can add or subtract to get your solution.
For #2: Distribute the left-hand side first. Then, subtract 12 from both sides of the equation to get something like: \[ax^2 + bx + c = 0\]. Factor the polynomial equation to get your solution for \[x \]
For #3: See #2.
For #4-#7: can't see the problems properly. Rewrite so that I can get a better picture.
#4: are we solving for values of x?
#5: I need to think about it a little more.
#6: rearrange to get \[x^3-0x^2-2x-2 = 0\] you may have to do long division.
#7: I interpret it as follows:\[x + 1 = (1/x) - x\] since the inverse of 1 is 1, and, x to the negative power is the inverse as shown. then multiply both sides by x to get \[x^2 + x = 1 - x^2 \] add an\[x^2 \] to both sides to get \[2x^2 + x = 1\] then subtract a 1 on both sides to get \[2x^2 + x -1 = 0\] solve for x to get solution