4x plus 7 plus 3x equals 19 plus xx = 2
3X = x2 - 2xsubtract 3X from each sideX2 - 5X = 0factor out an XX(X - 5) = 0=========X = 0--------orX = 5--------
x+2x+14=5x+214-2=5x+2x+x10=8x10/8=xx=5/4 ans.
Doesn't factor evenly, use quadratic -.5xx+2x+10 -.5(xx-4x-20) No factors of -20 add up to -4
First, write it in a mathematical equation form:4x=2x+14Next, subtract 2x from both sides2x = 14Divide both sides by xx = 7
xx+3x+7=6x+18 xx+3x+7-(6x+18)=6x+18-(6x+18) xx-3x-11=0 Factors of -11: 1,-11 -1,11 Doesn't factor evenly, use quadratic
4x plus 7 plus 3x equals 19 plus xx = 2
3X = x2 - 2xsubtract 3X from each sideX2 - 5X = 0factor out an XX(X - 5) = 0=========X = 0--------orX = 5--------
No 9xx-18x+36 9(xx-2x+4) xx-2x+4 (doesn't factor evenly)
x+2x+14=5x+214-2=5x+2x+x10=8x10/8=xx=5/4 ans.
Doesn't factor evenly, use quadratic -.5xx+2x+10 -.5(xx-4x-20) No factors of -20 add up to -4
First, write it in a mathematical equation form:4x=2x+14Next, subtract 2x from both sides2x = 14Divide both sides by xx = 7
It depends. Do you mean 3X as in 3 times X or do you mean 3 subtracted from X? (By the way, roman numerals are always capitalized) If you mean the former, then 3X is 30 which is equal to XXL (L being 50 and XX being the 20 subtracted from it). If you mean the latter, the 3X = 7 which is not equal to XXL or 30.
Let x be the smallest number.So,x + (x + 5) = 3x - 32 x + 5 = 3x - 32x - 2x 5 + 3 = 3x - 2x -3 + 38 = xx + 5 = 8 + 5 = 13the smallest number is 8, and the other number is 13.
If you mean (6x^2)/(2x^2), this problem is easy. (6x^2)/(2x^2) = (6/2) x (XX/XX) (XX is an easy way of writing X^2) 6/2 = 3 XX/XX = 1 3 x 1 = 3 so your answer is 3.
NOTE: xx can be written as x^2 i.e. x squared 3x^2 + 16x + 5 = 3 x^2 + x + 15x + 5 (Since 16x = x + 15x) = x ( 3x + 1 ) + 5 ( 3x + 1 ) = ( x + 5 ) ( 3x + 1 ) Therefore the factors are ( x + 5 ) and ( 3x + 1 )
Subtract 5 from each side: 16 = 5x + 3x ie 16 = 8xDivide each side by 8: 2 = x21 = 5x + 3x + 521 - 5 = 8x16 = 8x16/2 = x2 = xx = 2Check:21 = 5(2) + 3(2) + 521 = 10 + 6 + 521 = 21