2 years ago

F(x) = 3 x² + 5 x - 7 &

Mathematics

1 answer:

Andrew [12]2 years ago

6 0

Answer:

4x² + 13x + 3 and 2x² - 3x - 17

Step-by-step explanation:

(a)

f(x) + g(x)

= 3x² + 5x - 7 + x² + 8x + 10 ← collect like terms

= 4x² + 13x + 3

(b)

f(x) - g(x)

= 3x² + 5x - 7 - (x² + 8x + 10)

= 3x² + 5x - 7 - x² - 8x - 10 ← collect like terms

= 2x² - 3x - 17

You might be interested in

Rosanne is training for the Austin marathon, so she plans to run 10 miles in her neighborhood this weekend. It usually takes her

PolarNik [594]

Answer:2.5 cups

Step-by-step explanation:

Given

Rosanne runs 6 miles in an hour

If she drinks 0.5 cups of water every $\frac{1}{3}$ of an hour

So in 1 hour Rosanne drinks 1.5 cups

So, for 6 miles Rosanne drinks 1.5 cups

i.e. For $1\ mile \quad \equiv \quad \frac{1}{4}\ \text{cup}$

for $10\ mile\quad \equiv \quad \frac{10}{4}\ \text{cup}$

$=2.5\ \text{cup}$

6 0

3 years ago

121 is 55% of what number

Wewaii [24]

Let x be the unknown number
x×55%=121
x=121÷55%
x=220
So 121 is 55% of 220

3 0

3 years ago

137x8 multiply with expanded form please help 10 ponte for your help please help!

Step2247 [10]

Answer: maybe 20

Step-by-step explanation:

or find it out yourself

3 0

2 years ago

A man deposited $ 800 in his account at a bank which offers 6% simple interest per annum. How much interest would he receive on

strojnjashka [21]

Answer:

The answer is Rs.43,200.

5 0

3 years ago

Soda is sold in packs of 6, 12 and 24 cans. What is the minimum number of packs needed to buy

AnnZ [28]

Answer:

Step-by-step explanation:

its 5

6 0

2 years ago

Read 2 more answers