Hlep me with this Albebra.
This is not factorable, correct?
30x squared + 11x - 30 = 0
It is not factorable, right?
Hlep me with this Albebra.
This is not factorable, correct?
30x squared + 11x - 30 = 0
It is not factorable, right?
Incorrect.
(5x+6)(6x-5)
"I got my lips chewed off by a dingo!" --David Letterman
Thanks
Can you explain por favor?
(-b +- sqrt( b^2 - 4ac))/2a will also tell you of its factors.
The QUADRATIC FORMULA didn't work for me.
The factors, if any, would be of the form (Ax+B) and (Cx+D), where
AC=30
BD=-30
AD+BC=11.
There aren't many pairs of numbers that, when multiplied together, give you 30. These pairs are 1 & 30, 2 & 15, 3 & 10, 5 & 6. One of those pairs will be your choice for A & C, and one pair (possibly the same pair) will be your B & D (actually, B or D will be the negative of one of the numbers in one of the pairs).
You just have to start testing different combinations of these pairs. You don't even need to worry about the negative sign at first. Just look for pairs such that the product of one number in one pair and one number in the other pair is 11 away from the product of the other number in each pair. For example, take the pairs 5 & 6 and 5 & 6. 5*5=25, 6*6=36. Their difference is 11.
Go on to figure out where the negative sign goes.
"I got my lips chewed off by a dingo!" --David Letterman
Why are you doing his homework? Cryptic hints and guidance is what he needs That way he thinks it through and really learns
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche
"We can judge the heart of a man by his treatment of animals." - Immanuel Kant
Teasing you Max
You'll kick butt on the exam....relax and do the easy problems first and then go back and rework the problems you got stuck on. That way, you'll get more done if you run into time issues. Also, the easier problems will often give you hints on the harder ones. Strategy AND knowlege.
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche
"We can judge the heart of a man by his treatment of animals." - Immanuel Kant
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche
"We can judge the heart of a man by his treatment of animals." - Immanuel Kant
Any polynomial that can be expressed in "Ax^2 + Bx + C" (assuming A, B, and C are rational numbers) can be factored via the quadratic formula. It may be ugly, bristling with square roots, but it can be done.
You spelt help wrong, what do you expect?
Every passing minute is another chance to turn it all around.
And Algebra too, right? Of course what was I thinking.
Every passing minute is another chance to turn it all around.
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