7(a - 10) = 13 - 2(2a + 3)
7a - 70 = 13 - 4a - 6 = 7 - 4a
7a + 4a = 7 + 70
11a = 77
a = 77/11 = 7
a = 7.
Answer:
4/6 6/9 8/12 10/15 and so on, just multiply both the numerator and denominator by the same number and get your answer.
Step-by-step explanation:
Answer:
Step-by-step explanation:
1) a² - b² = (a + b)(a- b)
2) a³ + b³ = a³ + 3a²b + 3ab² + b³
3) a³ - b³ = a³ - 3a²b + 3ab² - b³
5) x⁴ - 36 = (x²)² - 6² = (x² + 6) (x² - 6)
6)64c³ + 1 = (4c)³ + 1³ = (4c)³ + 3(4c)²(1) + 3(4c)(1)³ + 1³
= 64c³ + 3(16c²) + 12c +1
= 64c³ + 48c² +12c + 1
7) k³ - 27 = k³- 3³ = (k + 3)(k - 3)
Vitvivuc vrivdfdxfdddxgtdcgyimbfdd
Answer:
.
Step-by-step explanation:
We want to find the polynomial that will result from expanding:
.
Recall that we can use the Pascal's triangle to obtain the coefficient as:
1 4 6 4 1
Also note how the negative sign is going to alternate.
The <em>power of x </em>will decrease from left to right while the <em>power of y</em> increases from left to right
The expansion then becomes:
.
