3 years ago

I don't understand this factorisation a2+ 4a+3

Mathematics

1 answer:

Tomtit [17]3 years ago

7 0

Answer:

$\boxed{\sf (a + 3)(a + 1)}$

Step-by-step explanation:

$\sf Factor \: the \: following: \\ \sf \implies {a}^{2} + 4a + 3 \\ \\ \sf The \: factors \: of \: 3 \: that \: sum \: to \: 4 \\ \sf are \: 3 \: and \: 1. \\ \\ \sf So, \\ \sf \implies {a}^{2} + (3 + 1)a + 3 \\ \\ \sf \implies {a}^{2} + 3a + a + 3 \\ \\ \sf \implies a(a + 3) + 1(a + 3) \\ \\ \sf \implies (a + 3)(a + 1)$

You might be interested in

antiseptic1488 [7]

Answer: 123

Step-by-step explanation: Stop cheating idiot

5 0

3 years ago

Partial quotient for 654 divided by 3

Vladimir79 [104]

654 over 3 = divide the both 654 and 3 by 3.

It will give you 218 over 1.

So the answer is 218.

6 0

3 years ago

what is the probability of rolling 15 with a pair of dice? answer in likely, unlikely, equally likely, or impossible

aleksley [76]

it is clearly impossible

8 0

3 years ago

Which of these needs the denominator rationalized? -PLEASE HELP

valentinak56 [21]

Answer:

option b

Step-by-step explanation:

$\sqrt{ \frac{5}{3} }$

$\frac{ \sqrt{5} }{ \sqrt{3} }$

the denominator is in the surd form, so it must be rationalized

4 0

3 years ago

please help me it is URGENT pls the first one is solve and the 2nd one is simplify I will give u lots of points thank you

klasskru [66]

I.) (5x+3)/4-(2x-4)/3=5
Clear fractions:
3·((5x+3)/4)=15x+9
4·((2x-4)/3)=8x-16
15x+9-(8x-16)=5
15x+9-8x+16=5
Combine like terms:
7x+25=5
7x=-20
x=-20/7

II.) (3/11)·(5/6)-(9/12)·(4/3)+(5/13)·(6/15)
Remember PEMDAS
So first multiply:
3/11·5/6=15/66
9/12·4/3=3/3·1/1=3/3=1
5/13·6/15=1/13·6/3=6/39=2/13
(15/66)-1+(2/13)
Combine:
15/66-1/1=15/66-66/66=-51/66
-51/66+2/3=-51/66+44/66=-7/66
Answer: -7/66 :)

7 0

3 years ago

Read 2 more answers

I don't understand this factorisation a2+ 4a+3​

I don't understand this factorisation a2+ 4a+3