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1 year ago

13

100 Points!!!

2 answers:

Mars2501 [29]1 year ago

7 0

Let's see

#a

Take 28

(28)²
(30-2)²
30²-2(30)(2)+2²
900-120+4
780+4
784

#2

Take 9,10

9³+10³
(9+10)(9²-9×10+10²)
(19)(81-90+100)
19(181-90)
19(91)
1729

oee [108]1 year ago

4 0

Answer:

Two-digit number greater than 25: 32

Rewrite 32 as the difference of 2 numbers: 40 - 8

Therefore, x = 40 and y = 8

$\begin{aligned}\implies (40-8)^2 & =40^2-2(40)(8)+8^2\\ & = (4 \cdot 10)^2-(80)(8)+64\\ & = 4^2 \cdot 10^2-640+64\\ & = 16 \cdot 100-640+64\\ & = 1600-640+64\\ & = 960+64\\ & = 1024\end{aligned}$

Let a = 10

Let b = 11

$\begin{aligned}\implies 10^3+11^3 & =(10+11)(10^2-10 \cdot 11+11^2)\\& = 21(100-110+121)\\ & = 21(-10+121)\\ & = 21(111)\\& = 21 (100 + 10 + 1)\\ & = (21 \cdot 100)+(21 \cdot 10)+(21 \cdot 1)\\ & = 2100 +210+21\\ & = 2310 + 21\\ & = 2331\end{aligned}$

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$\huge\underline{\overline{\mid{\bold{\red{ANSWER}}\mid}}}$

1. Both are corresponding angles, hence they both are equal, so,

$44x + 2 = 45x \\ = > 2 = 45x - 44x \\ = > 2 = x \\ = > x = 2$

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Ans. D) 7

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3 years ago

Leni [432]

C. I, II, and III
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3 years ago

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