Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 8

EASY

7th Tamil Nadu Board

IMPORTANT

Earn 100

Simplify: $(a + b)^{2} - 4 a b$ .

Important Questions on Algebra

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 9

Show that

(m - n)^{2} + (m + n)^{2} = 2 (m^{2} + n^{2})

.

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 10

If

a + b = 10

and

a b = 18

, find the value of

a^{2} + b^{2}

.

EASY

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 11

Factorize $z^{2} - 16$ , by using the identity $a^{2} - b^{2} = (a + b) (a - b)$ .

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 11

Factorise $9 - 4 y^{2}$ , by using the identity $a^{2} - b^{2} = (a + b) (a - b)$ .

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 11

Factorize $25 a^{2} - 49 b^{2}$ , by using the identity $x^{2} - y^{2} = (x + y) (x - y)$ .

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 11

Factorise $x^{4} - y^{4}$ , by using the identity $a^{2} - b^{2} = (a + b) (a - b)$ .

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 12

Factorise $x^{2} - 8 x + 16$ , using suitable identity.

MEDIUM

7th Tamil Nadu Board

IMPORTANT

Mathematics Standard 7 Term III>Chapter 3 - Algebra>Exercise>Q 12

Factorise $y^{2} + 20 y + 100$ , using suitable identity.