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x2 - 25 is the difference of two perfect squares, so you can factor it as such: it is equal to (x + 5)(x - 5). Dividing this by (x + 5) simply means (in this case) eliminating that factor; so the only part that remains is (x - 5).
25 times 6 times 25 minus 8 plus 12 divided by 5 = 3,744.4
24 divided by 4 = 6 5^2= 25, so 6 + 25 = 31 31x2 = 62 62-9= 53
X2+5x-6. a=1, b=5, and c=-6 The formula is: -b plus or minus the square root of b squared minus 4ac all over 2a. -b+square root of b2-4ac ---- 2a -5 plus or minus the square root of 5 squared minus 4(1)(-6) -5 plus or minus the square root of 25-4(-6) -5 plus or minus the square root of 25+24 -5 plus or minus the square root of 49 -5 plus or minus 7 Here is where you split into two different answers: Number 1: -5 plus 7= 2 Number 2: -5 minus 7= -12 Your answer is X=2, -12
52 + 52 = 25 + 25 = 50
If x is equal to 5, then x squared plus 25 is equal to 50.