3 years ago

Sandra wants to solve the equation x2+2x−3 = 12 by using the factoring method. Which of the following should be her first step?

Mathematics

1 answer:

Sophie [7]3 years ago

4 0

Answer:

her first step should be to multiply the coefficient of the first term by the constant 1 • -3 = -3

Step-by-step explanation:

i looked it up on tiger algebra lol

You might be interested in

Circumference means all the way around the circle right

goblinko [34]

Answer:

yes circumference is all the way around a circle

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Interval is 0, 2pi) 4 sin^2x-4 sin x + 1 = 0

svetoff [14.1K]

Answer:

$\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}}$

Step-by-step explanation:

$4\sin^2x-4\sin x+1=0\\\\2^2\sin^2x-2(2\sin x)(1)+1^2=0\\\\(2\sin x)^2-2(2\sin x)(1)+1^2=0\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(2\sin x-1)^2=0\iff2\ain x-1=0\qquad\text{add 1 to both sides}\\\\2\sin x=1\qquad\text{divide both sides by 2}\\\\\sin x=\dfrac{1}{2}\to x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}$