Find (2l – 3m + 4n) 2

4l 2 + 9m 2 + 16n 2 – 12lm – 24mn + 16nl

4l 2 - 9m 2 + 16n 2 – 12lm + 24mn + 16nl

4l 2 + 9m 2 + 16n 2 + 12lm – 24mn + 16nl

4l 2 + 9m 2 + 16n 2 – 12lm + 24mn + 16nl

Find (2x + 3y + 5z) 2

4x 2 + 9y 2 + 25z 2 + 12xy + 30yz + 20zx

4x 2 + 9y 2 + 25z 2 + 18xy + 30yz + 20zx

4x 2 + 9y 2 + 25z 2 + 12xy + 35yz + 20zx

4x 2 + 9y 2 + 25z 2 + 12xy + 30yz + 24zx

Algebraic identities

Authored by URVASHI SINGH

Mathematics

8th Grade

Used 180+ times

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8 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a+b=7, ab = 10, find a² + b²

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Use identity to find , (x-6)(x-19)

x² - 25x +114

x² - 25x -114

x² + 25x +114

x² + 25x -114

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$If\ x^2\ +\ \frac{1}{x^2}\ =\ 18,\ find\ x\ -\ \frac{1}{x}$

-4

$+-4$

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If area of the triangle is 24 ( x²yz + xy²z + xyz²) and its length is 8xyz, then its breadth is ?

3(x + y + z)

3xyz

3(x + y - z)

none

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Using identity find 201 x 199

3000

3999

39999

31111

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find 87² - 13²

7200

7300

7400

7500

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find (2l – 3m + 4n)²

4l² - 9m² + 16n² – 12lm + 24mn + 16nl

4l² + 9m² + 16n² + 12lm – 24mn + 16nl

4l² + 9m² + 16n² – 12lm + 24mn + 16nl

4l² + 9m² + 16n² – 12lm – 24mn + 16nl

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Algebraic identities

If a+b=7, ab = 10, find a2 + b2

Use identity to find , (x-6)(x-19)

If x2 + 1x2 = 18, find x − 1xIf\ x^2\ +\ \frac{1}{x^2}\ =\ 18,\ find\ x\ -\ \frac{1}{x}If x2 + x21​ = 18, find x − x1​

If area of the triangle is 24 ( x2yz + xy2z + xyz2) and its length is 8xyz, then its breadth is ?

Using identity find 201 x 199

Find 872 - 132

Find (2l – 3m + 4n)2

Find (2x + 3y + 5z)2

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

If a+b=7, ab = 10, find a² + b²

$If\ x^2\ +\ \frac{1}{x^2}\ =\ 18,\ find\ x\ -\ \frac{1}{x}$

If area of the triangle is 24 ( x²yz + xy²z + xyz²) and its length is 8xyz, then its breadth is ?

Find 87² - 13²

Find (2l – 3m + 4n)²

Find (2x + 3y + 5z)²