if 6272=2a×7b then a and b
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Answer:
Value of 4a²+49b²
Step-by-step explanation:
Given
2a + 7b = 1 and ab= -2
2a+ 7b =1
squaring on both sides
So ( 2a + 7b ) = 1² ---------(1)
formula of (a+b)²= a²+ 2×a×b+b²
Expand the equation (1)
(2a + 7b )² =1²
( 2a )²+2×2a×7b + (7b)²=1
4a²+28ab+49b²= 1
substitute ab= -2
4a²+28(-2)+49b²=1
4a²-56+49b²=1
4a²+49b²=57
The value of
4a²+49b² is 57
Answered by
1
Factor Pairs of 448
1 x 448 = 448.
2 x 224 = 448.
4 x 112 = 448.
7 x 64 = 448.
the possible values of a & b are 1, 448, 2, 224, 4, 112, 7, 64
HOPE THIS ANSWER HELPS YOU
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