DT DINNER 🥞 QUESTIONS (Maths)👇🕊️😋✨


1. Expand the expression:
(x²-2x-3)(x²+x+1)

A. x⁴-4x²-5x-3
B. -x³-4x² +5x-3
C. x⁴-x³-4x²-5x-3
D. x⁴-4x²-5x-3

Correct Answer: C ✍
(x²-2x-3)(x²+x+1)
= x²(x²+x+1) - 2x(x²+x+1) -3(x²+x+1)
= x⁴ + x³ + x² - 2x³ - 2x² - 2x - 3x² - 3x - 3
= x⁴ - x³ - 4x² - 5x -3 🤝

2. The Interior angles of a pentagon are: 180°, 118°, 80°, 78°, and x°. The value of x is?

A. 75°
B. 108°
C. 120°
D. 84°

Correct Answer: D ✍
no. of sides of polygon = 5
Sum of int. <s of a polygon = (n -2)180°
For a pentagon, (5-2)180° = 540°
x = 540° - (180° + 118° + 80° + 78°)
x = 84°
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PHRASAL VERBS OF THE DAY(Revision)

🌹 LAY OFF:
••This means to dismiss or sack.
••This means to stop using or doing something

The company has decided to lay off some of the casual workers

The man agreed to lay off the habit of smoking

🌹 RESORT TO:
This means to make use of an unpleasant alternative.

When the large hall was not available, we resorted to making use of the mini hall

🌹 GET BACK AT
This means to take revenge on somebody.

Bola Tinubu has vowed to get back at some of the hoodlums who destroyed home of his personal property

🌹 LEAVE OUT
To omit or exclude.

Lionel Messi's name has been left out of the Barcelona squad

🌹 BRING ROUND
This means to revive someone who has fainted

Although Ola fainted last night, he has been brought round by experienced doctors

IDIOMS OF THE DAY

These are the JAMB idioms that appeared TWICE OR MORE in the past questions and are therefore MORE LIKELY to be repeated in your JAMB this year.

🌹TELL-TALE SIGN:
••showing that something exist or has happened.
••gossip about or reveal another person's secrets or wrongdoings.

"she sparked a family row after telling tales about her mother on a TV show"

🌹THROW YOUR WEIGHT AROUND:
••to use your position or influence unfairly to get what you want.
••be unpleasantly self-assertive.

"he didn't swagger or throw his weight around"

🌹TO KEEP OPEN HOUSE:
••to have your house in a condition in which visitors are welcome at any time.
••a situation in which people welcome visitors at any time:

~We keep open house, so come and see us any time.

🌹UNDER A CLOUD:
••used to say that other people are suspicious of someone because they think he/she has done something wrong.
••under suspicion or discredited.
••Under suspicion, in trouble, or out of favor.

"he left under something of a cloud, accused of misappropriating funds"
~Ever since his brother was accused of fraud, he's been under a cloud.

🌹UP IN THE AIR:
••not yet decided.
(of a plan or issue) still to be settled; unresolved.

"the fate of the power station is up in the air"

🌹WIDE OF THE MARK:
••not accurate
••not achieving the desired result.

~Their estimates were completely wide of the mark.