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(x + 3) (x + 7) = x 2 + (3 + 7)x + ( 3 x 7) = x 2 + 10x + 21

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101.

Use a suitable identity to get each of the following products.

(7a - 9b) (7a - 9b)

126 Views

(x + 3) (x + 7) = x²+ (3 + 7)x + ( 3 x 7)
= x²+ 10x + 21

102 Views

103.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

(4x + 5) (4x + 1)

99 Views

104.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

(4x - 5) (4x - 1)

80 Views

105.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

(4x + 5) (4x - 1)

83 Views

106.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

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

94 Views

107.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

(2a²+ 9) (2a²+ 5)

114 Views

108.

89 Views

109.

Use the identity (x + a)(x + b) = x² + (a + b)x + ab to find the following products.

(xyz - 4) (xyz - 2)

114 Views

110.

Find the following squares by using the identities.

(b - 7)²

97 Views