Answer:
(a + 2b)(a - b)
Step-by-step explanation:
Assuming you require the expression to be factored
Given
a² + ab - b² ← factor out from each term
= (a² + ab - 2b²) ← factor the quadratic
Consider the factors of the coefficient of the b² term(- 2) which sum to give the coefficient of the ab- term (+ 1)
The factors are + 2 and - 1, since
2 × - 1 = - 2 and 2 - 1 = + 1, thus
a² + ab - 2b² = (a + 2b)(a - b) and
a² + ab - b² = (a + 2b)(a - b)
Bruce used about 54.5% of his money (or 55% rounded up) on his lunch. In order to get the 54.5% you would need to divide the amount he spent by the amount he had.
30/55= 54.5
Answer:
there does not seem like a picture so I dont know the answer
Let j be Jacob's money. Then Angie is 3j, and Erin is 3j+35. So:
j+3j+3j+35=196
7j=161
j=23
Jacob had $23
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