Here's the question you clicked on:
TestTakingLifesaver
Which expression represents the area of the triangle? base=2x+12, height x+7 A) 3x + 19 B) 3x2 + 84 C) x2 + 13x + 42 D) 2x2 + 26x + 84
A = bh/2 So, you would multiply the 2 expression for "b" and "h" (that are in "x") and divide by "2". Hint: It's easier to divide the "base" (or b) expression first by "2" and then simply multiply that by the expression for "h".
So, what is the expression for for the base divided by "2"?
Very good. So, now, all you have to do is multiply your answer by "x + 7" (x + 6)(x + 7) = ?
When you have an expression like: (x + a)(x + b) It is: x(x + b) + a(x + b) = x^2 + bx + ax + ab = x^2 + (a + b)x + ab So, just substitute a = 6 and b = 7 in that last equation
thank you this is so confusing
Math can be, but if you take it step by step, it won't trick you. IMath is like a friend that speaks a foreign language.
i'll practice and see if i can learn the langage
That's a great attitude! You'll succeed if you stick with it. And you might want to go over that equality expansion a couple of times because it could clear things up for you.
ok thanks so much
You're very welcome and nice working with you!
And thx for the recognition! @TestTakingLifesaver Good luck in all of your studies.