Find the value of a and b for:
ab=18, a + b =11
Find the value of a and b for:
ab=21, a + b=22
What should be filled in the given blank in order to make the expression a perfect square?
x^{2}+______+25
What should be filled in the given blank in order to make the expression a perfect square?
y^{2}- ______+81
What should be filled in the gap below in order to make the expression a perfect square?
4x^{2} +______+ 9y^{2}
What should be filled in the gap below in order to make the expression a perfect square?
9x^{2} + ______ + 16
What should be filled in the given blank in order to make the expression a perfect square?
25x^{2}- ______ + 64
What should be filled in the given blank in order to make the expression a perfect square?
36 - ______ + 25y^{2}
What is the correct value of (64)^{2} – (36)^{2}?
Which one of the following is the correct value of (42)^{2} – (28)^{2}?
Find the value of:
(10003)^{2} – (9997)^{2}
Which one of them is the correct value of (9.2)^{2} – (0.8)^{2}?