2 years ago

(2x - 3)² Special cases

2 answers:

7 0

Answer: 4x^2-12x+9

Explanation: Use (a-b)^2=a^2-2ab+b^2 to expand the expression.

(2x^2)-2*2x*3+3^2

4x^2-2*2x*3+3^2

4x^2-12x+3^2

4x^2-12x+9

Bogdan [553]2 years ago

4 0

Answer:

4x²+12x+9

Step-by-step explanation:

1. 2x times 2x = 4x²

2. 2x times 3 = 12x

3. 3 x 3 = 9 or 3² also equals 9

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How do I make 9.076 turn into expandedform

Contact [7]

Answer:

9 + 0.0 + 0.07 + 0.006

Step-by-step explanation:

9 + 0.0 + 0.07 + 0.006

4 0

3 years ago

28% of what number is 63

Scrat [10]

We set up a proportion: 63/?= 28/100

Cross multiply: 28*?= 63*100
⇒ ?= 63*100/28= 225

28% of 225 is 63.

6 0

3 years ago

Read 2 more answers

Y= -27(x+4)³+1 the real zero(s) is (are)

rjkz [21]

$\bf y=-27(x+4)^3+1\implies 0=-27(x+4)^3+1
\\\\\\
-1=-27(x+4)^3\implies \cfrac{-1}{-27}=(x+4)^3\implies \cfrac{1}{27}=(x+4)^3
\\\\\\
\sqrt[3]{\cfrac{1}{27}}=x+4\implies \cfrac{\sqrt[3]{1}}{\sqrt[3]{27}}=x+4\implies \cfrac{1}{3}=x+4\implies \cfrac{1}{3}-4=x
\\\\\\
-\cfrac{11}{3}=x$