A number was multiplied by 6 then increased by 3 and the result was 33
1 answer:
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You have to use the difference of 2 cubes pattern for this to cancel out the x-2. Hope this helps!!!
So to find x we need to add both HI and IJ - which we know equals 7:
Then we need to combine like terms:
And then set equal to 0:
Then we can factor:
So then when we set each term equal to 0 individually and solve for x we get: x = -5 and x = -2.
So we have these two values - we need to test which one is correct. So if we go back to the HI segment, let's try plugging in x = -5:
This gives us a negative number, which we know that length cannot be negative. Let's try x = -2:
This gives us a positive length and therefore we can keep this value.
So the answer is: x = -2.